# Fresh install // Not sending emails, NL form

**URL:** <https://forum.mautic.org/t/fresh-install-not-sending-emails-nl-form/23339>\
**Category:** Product Support\
**Created:** [March 29, 2022, 2:12pm UTC](https://forum.mautic.org/t/fresh-install-not-sending-emails-nl-form/23339 "2022-03-29T14:12:53Z")\
**Posts on this page:** 14\
**Page:** 1

<div class="post-metadata">

**Author:** ![wlsfh](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/wlsfh/32/6731_2.png) [@wlsfh](https://forum.mautic.org/u/wlsfh)\
**Post date:** [March 29, 2022, 2:12pm UTC](https://forum.mautic.org/t/fresh-install-not-sending-emails-nl-form/23339/1 "2022-03-29T14:12:53Z")

</div>

My Mautic version is: 4.2  
My PHP version is: 7.4.3  
My Database type and version is: MariaDB 10.3.34

1. I just installed a fresh new version of Mautic 4.2 on my Nginx VPS and noticed I can’t send emails out (below error log).
2. I have also setup a registration form. When a user register a new contact is created in Mautic, but confirmation email won’t be sent out (below error log in _italic_)

**These errors are showing in the log:**  
[2022-03-29 15:15:26] mautic.WARNING: PHP Warning - require(/home/mautik/public\_html/var/cache/prod/doctrine/orm/Proxies/\_\_CG\_\_MauticPluginBundleEntityPlugin.php): failed to open stream: No such file or directory - in file /home/mautik/public\_html/vendor/doctrine/common/lib/Doctrine/Common/Proxy/AbstractProxyFactory.php - at line 187 {“className”:“Mautic\PluginBundle\Entity\Plugin”,“classMetadata”:"[object] (Doctrine\ORM\Mapping\ClassMetadata: Doctrine\ORM\Mapping\ClassMetadataInfo@0000000035cca50c0000000055410c9d)",“proxyClassName”:“Proxies\ **CG** \Mautic\PluginBundle\Entity\Plugin”,“fileName”:"/home/mautik/public\_html/var/cache/prod/doctrine/orm/Proxies/\_\_CG\_\_MauticPluginBundleEntityPlugin.php"}   
[2022-03-29 15:15:26] mautic.ERROR: PHP Notice: require(): Failed opening required ‘/home/mautik/public\_html/var/cache/prod/doctrine/orm/Proxies/\_\_CG\_\_MauticPluginBundleEntityPlugin.php’ (include\_path=’.:/usr/share/php’) - in file /home/mautik/public\_html/vendor/doctrine/common/lib/Doctrine/Common/Proxy/AbstractProxyFactory.php - at line 187    
[2022-03-29 15:15:26] mautic.ERROR: Symfony\Component\Debug\Exception\FatalErrorException: Notice: require(): Failed opening required ‘/home/mautik/public\_html/var/cache/prod/doctrine/orm/Proxies/\_\_CG\_\_MauticPluginBundleEntityPlugin.php’ (include\_path=’.:/usr/share/php’) - in file /home/mautik/public\_html/vendor/doctrine/common/lib/Doctrine/Common/Proxy/AbstractProxyFactory.php - at line 187    
_[2022-03-29 14:19:34] mautic.WARNING: PHP Warning - mkdir(): File exists - in file /home/mautik/public\_html/app/bundles/CoreBundle/IpLookup/AbstractLocalDataLookup.php - at line 179 {“dataDir”:"/home/mautik/public\_html/var/cache/prod/…/ip\_data"} []_

**Steps I have tried to fix the problem:**  
These are the things I’ve done, with no success

1. Checked my smpt configuration under /config/local.php and it’s correct.
2. I have deleted Mautic cache multiple times.  
rm -rf var/cache/\*
3. I have checked and reset folders/files permissions

```auto
find . -type f -not -perm 644 -exec chmod 644 {} +
find . -type d -not -perm 755 -exec chmod 755 {} +
chmod -R g+w var/cache/ var/logs/ app/config/
chmod -R g+w media/files/ media/images/ translations/

```

1. I have reset user:group to where I installed Mautik on my VPS.  
chown -R mautik:mautik /home/mautik/public\_html/

I am running out of ideas. Anyone can help?

---

<div class="post-metadata">

**Author:** ![mzagmajster](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/mzagmajster/32/687_2.png) [@mzagmajster](https://forum.mautic.org/u/mzagmajster)\
**Post date:** [March 29, 2022, 2:33pm UTC](https://forum.mautic.org/t/fresh-install-not-sending-emails-nl-form/23339/2 "2022-03-29T14:33:22Z")

</div>

Hi, what user is running the webserver?

Try the following:

- Reinstall composer packages (but backup existing folder first)
- Run php bin/console mautic:cache:clear --env=prod (yes it clears cache but it also crates warmup cache)

---

<div class="post-metadata">

**Author:** ![wlsfh](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/wlsfh/32/6731_2.png) [@wlsfh](https://forum.mautic.org/u/wlsfh)\
**Post date:** [March 29, 2022, 3:14pm UTC](https://forum.mautic.org/t/fresh-install-not-sending-emails-nl-form/23339/3 "2022-03-29T15:14:56Z")

</div>

Hey thanks for the tips.

So my user is called ‘mautik’.  
$ ps aux | grep nginx  
mautik 579 0.0 0.2 14624 4780 ? S Mar07 0:00 /usr/bin/perl /usr/bin/php-loop.pl /bin/php-cgi7.4 -b /var/php-nginx/16449968312950283.sock/socket  
mautik 604 0.0 0.6 273856 12500 ? Ss Mar07 0:00 /bin/php-cgi7.4 -b /var/php-nginx/16449968312950283.sock/socket  
root 221638 0.0 0.0 56780 1704 ? Ss Mar27 0:00 nginx: master process /usr/sbin/nginx -g daemon on; master\_process on;  
www-data 221639 0.0 0.3 60580 7648 ? S Mar27 0:54 nginx: worker process  
mautik 607518 0.0 7.5 388556 154200 ? S Mar28 0:20 /bin/php-cgi7.4 -b /var/php-nginx/16449968312950283.sock/socket  
mautik 609239 0.0 7.4 389664 151488 ? S Mar28 0:19 /bin/php-cgi7.4 -b /var/php-nginx/16449968312950283.sock/socket  
mautik 611681 0.0 7.2 389656 146500 ? S Mar28 0:18 /bin/php-cgi7.4 -b /var/php-nginx/16449968312950283.sock/socket  
mautik 625457 0.0 7.2 389988 146256 ? S Mar28 0:18 /bin/php-cgi7.4 -b /var/php-nginx/16449968312950283.sock/socketù

Before re installing the composer package I did run:  
php bin/console mautic:cache:clear --env=prod  
And I got the green light.

When testing email sending though, I got this message:  
’ Uh oh! I think I broke it. If I do it again, please report me to the system administrator!

#### **500** Internal Server Error’

I went on checking inside Nginx error.log and I found this:

2022/03/29 14:59:08 [error] 221639#221639: \*53872 FastCGI sent in stderr: “PHP Warning: file\_put\_contents(/var/cache/prod/lastUpdateCheck.txt): failed to open stream: Permission denied in /app/bundles/CoreBundle/Helper/UpdateHelper.php on line 204” while reading response header from upstream, client: 94.17.252.118, server: [mautik.briskby.com](http://mautik.briskby.com), request: “GET /s/themes?\_=1648565812933&mauticUserLastActive=137 HTTP/2.0”, upstream: “fastcgi://unix:/var/php-nginx/16449968312950283.sock/socket:”, host: “[mautik.briskby.com](http://mautik.briskby.com)”, referrer: “[Mautic](https://mautik.briskby.com/s/dashboard)”  
2022/03/29 14:59:37 [error] 221639#221639: \*53874 FastCGI sent in stderr: “PHP Warning: file\_put\_contents(/var/cache/prod/lastUpdateCheck.txt): failed to open stream: Permission denied in /app/bundles/CoreBundle/Helper/UpdateHelper.php on line 204” while reading response header from upstream, client: 94.17.252.118, server: [mautik.briskby.com](http://mautik.briskby.com), request: “GET /s/dashboard HTTP/2.0”, upstream: “fastcgi://unix:/var/php-nginx/16449968312950283.sock/socket:”, host: “[mautik.briskby.com](http://mautik.briskby.com)”, referrer: “[Mautic](https://mautik.briskby.com/s/login)”

I then reset again all users/permission etc… and cleared the cache once again and it went back on working.  
I tried again to send a test email, but nada. On the dashboard I get the ‘email sent successfully’ but nothing happens. Not even a log to check. Mute 😕

---

<div class="post-metadata">

**Author:** ![mzagmajster](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/mzagmajster/32/687_2.png) [@mzagmajster](https://forum.mautic.org/u/mzagmajster)\
**Post date:** [March 29, 2022, 3:27pm UTC](https://forum.mautic.org/t/fresh-install-not-sending-emails-nl-form/23339/4 "2022-03-29T15:27:43Z")

</div>

What about mautic logs in var/logs/?

Do cronjobs to send email working? Do you send emails immediately?

---

<div class="post-metadata">

**Author:** ![wlsfh](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/wlsfh/32/6731_2.png) [@wlsfh](https://forum.mautic.org/u/wlsfh)\
**Post date:** [March 29, 2022, 8:22pm UTC](https://forum.mautic.org/t/fresh-install-not-sending-emails-nl-form/23339/5 "2022-03-29T20:22:04Z")

</div>

I noticed cron jobs were enabled but I forgot to configure them.  
Anyways, I bypassed the cron jobs by sending email immediately.  
I tested the smtp and it responds successfully [Screenshot by Lightshot](https://prnt.sc/Ure4E63ts0DA) (and I received the test email too).

When I do a proper test I though get errors as printed in the log herebelow:

[2022-03-29 22:16:01] mautic.ERROR: [MAIL ERROR] Expected response code 354 but got code “503”, with message "503-All RCPT commands were rejected with this error: 503-Unexisting, forged or unallowed sender address 503-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated 503-connection ([mautic@briskby.com](mailto:mautic@briskby.com)) 503 Valid RCPT command must precede DATA " Log data: ++ Starting Swift\_Transport\_EsmtpTransport \<\< 220 [mx1uk.supremebox.com](http://mx1uk.supremebox.com) ESMTP \>\> EHLO [mautik.briskby.com](http://mautik.briskby.com) \<\< [250-mx1uk.supremebox.com](http://250-mx1uk.supremebox.com) Hello [mautik.briskby.com](http://mautik.briskby.com) [159.65.54.248] 250-SIZE 31457280 250-8BITMIME 250-PIPELINING 250-AUTH CRAM-MD5 PLAIN LOGIN 250-CHUNKING 250-STARTTLS 250 HELP \>\> AUTH LOGIN \<\< 334 VXNlcm5hbWU6 \>\> bWF1dGljQGJyaXNrYnkuY29t \<\< 334 UGFzc3dvcmQ6 \>\> NUhQRnp5OHA3JQ== \<\< 235 Authentication succeeded ++ Swift\_Transport\_EsmtpTransport started \>\> MAIL FROM: \>\> RCPT TO: \>\> DATA \<\< 250 OK \<\< 550-Unexisting, forged or unallowed sender address 550-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated 550 connection ([mautic@briskby.com](mailto:mautic@briskby.com)) !! Expected response code 250/251/252 but got code “550”, with message "550-Unexisting, forged or unallowed sender address 550-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated 550 connection ([mautic@briskby.com](mailto:mautic@briskby.com)) " (code: 550) \<\< 503-All RCPT commands were rejected with this error: 503-Unexisting, forged or unallowed sender address 503-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated 503-connection ([mautic@briskby.com](mailto:mautic@briskby.com)) 503 Valid RCPT command must precede DATA !! Expected response code 354 but got code “503”, with message "503-All RCPT commands were rejected with this error: 503-Unexisting, forged or unallowed sender address 503-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated 503-connection ([mautic@briskby.com](mailto:mautic@briskby.com)) 503 Valid RCPT command must precede DATA " (code: 503) Log data: ++ Starting Swift\_Transport\_EsmtpTransport \<\< 220 [mx1uk.supremebox.com](http://mx1uk.supremebox.com) ESMTP \>\> EHLO [mautik.briskby.com](http://mautik.briskby.com) \<\< [250-mx1uk.supremebox.com](http://250-mx1uk.supremebox.com) Hello [mautik.briskby.com](http://mautik.briskby.com) [159.65.54.248] 250-SIZE 31457280 250-8BITMIME 250-PIPELINING 250-AUTH CRAM-MD5 PLAIN LOGIN 250-CHUNKING 250-STARTTLS 250 HELP \>\> AUTH LOGIN \<\< 334 VXNlcm5hbWU6 \>\> bWF1dGljQGJyaXNrYnkuY29t \<\< 334 UGFzc3dvcmQ6 \>\> NUhQRnp5OHA3JQ== \<\< 235 Authentication succeeded ++ Swift\_Transport\_EsmtpTransport started \>\> MAIL FROM: \>\> RCPT TO: \>\> DATA \<\< 250 OK \<\< 550-Unexisting, forged or unallowed sender address 550-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated 550 connection ([mautic@briskby.com](mailto:mautic@briskby.com)) !! Expected response code 250/251/252 but got code “550”, with message "550-Unexisting, forged or unallowed sender address 550-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated 550 connection ([mautic@briskby.com](mailto:mautic@briskby.com)) " (code: 550) \<\< 503-All RCPT commands were rejected with this error: 503-Unexisting, forged or unallowed sender address 503-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated 503-connection ([mautic@briskby.com](mailto:mautic@briskby.com)) 503 Valid RCPT command must precede DATA !! Expected response code 354 but got code “503”, with message "503-All RCPT commands were rejected with this error: 503-Unexisting, forged or unallowed sender address 503-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated 503-connection ([mautic@briskby.com](mailto:mautic@briskby.com)) 503 Valid RCPT command must precede DATA " (code: 503) !! Expected response code 354 but got code “503”, with message "503-All RCPT commands were rejected with this error: 503-Unexisting, forged or unallowed sender address 503-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated 503-connection ([mautic@briskby.com](mailto:mautic@briskby.com)) 503 Valid RCPT command must precede DATA " Log data: ++ Starting Swift\_Transport\_EsmtpTransport \<\< 220 [mx1uk.supremebox.com](http://mx1uk.supremebox.com) ESMTP \>\> EHLO [mautik.briskby.com](http://mautik.briskby.com) \<\< [250-mx1uk.supremebox.com](http://250-mx1uk.supremebox.com) Hello [mautik.briskby.com](http://mautik.briskby.com) [159.65.54.248] 250-SIZE 31457280 250-8BITMIME 250-PIPELINING 250-AUTH CRAM-MD5 PLAIN LOGIN 250-CHUNKING 250-STARTTLS 250 HELP \>\> AUTH LOGIN \<\< 334 VXNlcm5hbWU6 \>\> bWF1dGljQGJyaXNrYnkuY29t \<\< 334 UGFzc3dvcmQ6 \>\> NUhQRnp5OHA3JQ== \<\< 235 Authentication succeeded ++ Swift\_Transport\_EsmtpTransport started \>\> MAIL FROM: \>\> RCPT TO: \>\> DATA \<\< 250 OK \<\< 550-Unexisting, forged or unallowed sender address 550-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated 550 connection ([mautic@briskby.com](mailto:mautic@briskby.com)) !! Expected response code 250/251/252 but got code “550”, with message “550-Unexisting, forged or unallowed sender address 550-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated 550 connection ([mautic@briskby.com](mailto:mautic@briskby.com)) " (code: 550) \<\< 503-All RCPT commands were rejected with this error: 503-Unexisting, forged or unallowed sender address 503-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated 503-connection ([mautic@briskby.com](mailto:mautic@briskby.com)) 503 Valid RCPT command must precede DATA !! Expected response code 354 but got code “503”, with message “503-All RCPT commands were rejected with this error: 503-Unexisting, forged or unallowed sender address 503-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated 503-connection ([mautic@briskby.com](mailto:mautic@briskby.com)) 503 Valid RCPT command must precede DATA " (code: 503) (code: 503) (send); [teatrodoc@gmail.com](mailto:teatrodoc@gmail.com) {“exception”:”[object] (Swift\_TransportException(code: 503): Expected response code 354 but got code “503”, with message “503-All RCPT commands were rejected with this error:\r\n503-Unexisting, forged or unallowed sender address\r\n503-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated\r\n503-connection ([mautic@briskby.com](mailto:mautic@briskby.com))\r\n503 Valid RCPT command must precede DATA\r\n”\nLog data:\n++ Starting Swift\_Transport\_EsmtpTransport\n\<\< 220 [mx1uk.supremebox.com](http://mx1uk.supremebox.com) ESMTP\r\n\n\>\> EHLO [mautik.briskby.com](http://mautik.briskby.com)\r\n\n\<\< [250-mx1uk.supremebox.com](http://250-mx1uk.supremebox.com) Hello [mautik.briskby.com](http://mautik.briskby.com) [159.65.54.248]\r\n250-SIZE 31457280\r\n250-8BITMIME\r\n250-PIPELINING\r\n250-AUTH CRAM-MD5 PLAIN LOGIN\r\n250-CHUNKING\r\n250-STARTTLS\r\n250 HELP\r\n\n\>\> AUTH LOGIN\r\n\n\<\< 334 VXNlcm5hbWU6\r\n\n\>\> bWF1dGljQGJyaXNrYnkuY29t\r\n\n\<\< 334 UGFzc3dvcmQ6\r\n\n\>\> NUhQRnp5OHA3JQ==\r\n\n\<\< 235 Authentication succeeded\r\n\n++ Swift\_Transport\_EsmtpTransport started\n\>\> MAIL FROM:\r\n\n\>\> RCPT TO:\r\n\n\>\> DATA\r\n\n\<\< 250 OK\r\n\n\<\< 550-Unexisting, forged or unallowed sender address\r\n550-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated\r\n550 connection ([mautic@briskby.com](mailto:mautic@briskby.com))\r\n\n!! Expected response code 250/251/252 but got code “550”, with message “550-Unexisting, forged or unallowed sender address\r\n550-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated\r\n550 connection ([mautic@briskby.com](mailto:mautic@briskby.com))\r\n” (code: 550)\n\<\< 503-All RCPT commands were rejected with this error:\r\n503-Unexisting, forged or unallowed sender address\r\n503-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated\r\n503-connection ([mautic@briskby.com](mailto:mautic@briskby.com))\r\n503 Valid RCPT command must precede DATA\r\n\n!! Expected response code 354 but got code “503”, with message “503-All RCPT commands were rejected with this error:\r\n503-Unexisting, forged or unallowed sender address\r\n503-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated\r\n503-connection ([mautic@briskby.com](mailto:mautic@briskby.com))\r\n503 Valid RCPT command must precede DATA\r\n” (code: 503)\nLog data:\n++ Starting Swift\_Transport\_EsmtpTransport\n\<\< 220 [mx1uk.supremebox.com](http://mx1uk.supremebox.com) ESMTP\r\n\n\>\> EHLO [mautik.briskby.com](http://mautik.briskby.com)\r\n\n\<\< [250-mx1uk.supremebox.com](http://250-mx1uk.supremebox.com) Hello [mautik.briskby.com](http://mautik.briskby.com) [159.65.54.248]\r\n250-SIZE 31457280\r\n250-8BITMIME\r\n250-PIPELINING\r\n250-AUTH CRAM-MD5 PLAIN LOGIN\r\n250-CHUNKING\r\n250-STARTTLS\r\n250 HELP\r\n\n\>\> AUTH LOGIN\r\n\n\<\< 334 VXNlcm5hbWU6\r\n\n\>\> bWF1dGljQGJyaXNrYnkuY29t\r\n\n\<\< 334 UGFzc3dvcmQ6\r\n\n\>\> NUhQRnp5OHA3JQ==\r\n\n\<\< 235 Authentication succeeded\r\n\n++ Swift\_Transport\_EsmtpTransport started\n\>\> MAIL FROM:\r\n\n\>\> RCPT TO:\r\n\n\>\> DATA\r\n\n\<\< 250 OK\r\n\n\<\< 550-Unexisting, forged or unallowed sender address\r\n550-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated\r\n550 connection ([mautic@briskby.com](mailto:mautic@briskby.com))\r\n\n!! Expected response code 250/251/252 but got code “550”, with message “550-Unexisting, forged or unallowed sender address\r\n550-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated\r\n550 connection ([mautic@briskby.com](mailto:mautic@briskby.com))\r\n” (code: 550)\n\<\< 503-All RCPT commands were rejected with this error:\r\n503-Unexisting, forged or unallowed sender address\r\n503-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated\r\n503-connection ([mautic@briskby.com](mailto:mautic@briskby.com))\r\n503 Valid RCPT command must precede DATA\r\n\n!! Expected response code 354 but got code “503”, with message “503-All RCPT commands were rejected with this error:\r\n503-Unexisting, forged or unallowed sender address\r\n503-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated\r\n503-connection ([mautic@briskby.com](mailto:mautic@briskby.com))\r\n503 Valid RCPT command must precede DATA\r\n” (code: 503)\n!! Expected response code 354 but got code “503”, with message “503-All RCPT commands were rejected with this error:\r\n503-Unexisting, forged or unallowed sender address\r\n503-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated\r\n503-connection ([mautic@briskby.com](mailto:mautic@briskby.com))\r\n503 Valid RCPT command must precede DATA\r\n”\nLog data:\n++ Starting Swift\_Transport\_EsmtpTransport\n\<\< 220 [mx1uk.supremebox.com](http://mx1uk.supremebox.com) ESMTP\r\n\n\>\> EHLO [mautik.briskby.com](http://mautik.briskby.com)\r\n\n\<\< [250-mx1uk.supremebox.com](http://250-mx1uk.supremebox.com) Hello [mautik.briskby.com](http://mautik.briskby.com) [159.65.54.248]\r\n250-SIZE 31457280\r\n250-8BITMIME\r\n250-PIPELINING\r\n250-AUTH CRAM-MD5 PLAIN LOGIN\r\n250-CHUNKING\r\n250-STARTTLS\r\n250 HELP\r\n\n\>\> AUTH LOGIN\r\n\n\<\< 334 VXNlcm5hbWU6\r\n\n\>\> bWF1dGljQGJyaXNrYnkuY29t\r\n\n\<\< 334 UGFzc3dvcmQ6\r\n\n\>\> NUhQRnp5OHA3JQ==\r\n\n\<\< 235 Authentication succeeded\r\n\n++ Swift\_Transport\_EsmtpTransport started\n\>\> MAIL FROM:\r\n\n\>\> RCPT TO:\r\n\n\>\> DATA\r\n\n\<\< 250 OK\r\n\n\<\< 550-Unexisting, forged or unallowed sender address\r\n550-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated\r\n550 connection ([mautic@briskby.com](mailto:mautic@briskby.com))\r\n\n!! Expected response code 250/251/252 but got code “550”, with message “550-Unexisting, forged or unallowed sender address\r\n550-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated\r\n550 connection ([mautic@briskby.com](mailto:mautic@briskby.com))\r\n” (code: 550)\n\<\< 503-All RCPT commands were rejected with this error:\r\n503-Unexisting, forged or unallowed sender address\r\n503-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated\r\n503-connection ([mautic@briskby.com](mailto:mautic@briskby.com))\r\n503 Valid RCPT command must precede DATA\r\n\n!! Expected response code 354 but got code “503”, with message “503-All RCPT commands were rejected with this error:\r\n503-Unexisting, forged or unallowed sender address\r\n503-([mautic+bounce\_624369019bfb4759895462@briskby.com](mailto:mautic+bounce_624369019bfb4759895462@briskby.com)) used with authenticated\r\n503-connection ([mautic@briskby.com](mailto:mautic@briskby.com))\r\n503 Valid RCPT command must precede DATA\r\n” (code: 503) (code: 503) at /home/mautik/public\_html/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Plugins/LoggerPlugin.php:124)”}

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<div class="post-metadata">

**Author:** ![mzagmajster](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/mzagmajster/32/687_2.png) [@mzagmajster](https://forum.mautic.org/u/mzagmajster)\
**Post date:** [March 29, 2022, 8:49pm UTC](https://forum.mautic.org/t/fresh-install-not-sending-emails-nl-form/23339/6 "2022-03-29T20:49:18Z")

</div>

It looks like there is a problem with the email address you are trying to use to send message? Can you double check the creds?

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<div class="post-metadata">

**Author:** ![wlsfh](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/wlsfh/32/6731_2.png) [@wlsfh](https://forum.mautic.org/u/wlsfh)\
**Post date:** [March 29, 2022, 8:53pm UTC](https://forum.mautic.org/t/fresh-install-not-sending-emails-nl-form/23339/7 "2022-03-29T20:53:40Z")

</div>

> [@wlsfh](#):
>
> mautic.ERROR: [MAIL ERROR] Expected response code 354 but got code “503”, with message "503-All RCPT commands were rejected with this error: 503-Unexisting, forged or unallowed sender address 503

Credentials are fine. I also received the test email using ‘send test email’ in configuration/email settings.

It looks like it’s happening when sending emails to external addresses.

By the looks of things, it seems this is a pending issue?

> [@mautic.ERROR: \[MAIL ERROR\] Expected response code 354 but got code "503"](https://forum.mautic.org/t/mautic-error-mail-error-expected-response-code-354-but-got-code-503/18705):
>
> Your software Mautic: 3.2.5, 3.3.1 and 3.3.2 PHP: 7.4 MySQL: 5.7 CentOS: 7.9 cPanel: 94.0.4 PHP-FPM: Activated Service to send mail through: Other SMTP Server SMTP encryption type: none SMTP authentication mode: Plain How should email be handled?: Send inmmediatly Send test mail: Success! Your problem I have been using Mautic for several years now and it always worked fine, however, from version 3.2.5 to 3.3.1 as well as with 3.3.2, it is having problems to send the emails. I have t…

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<div class="post-metadata">

**Author:** ![wlsfh](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/wlsfh/32/6731_2.png) [@wlsfh](https://forum.mautic.org/u/wlsfh)\
**Post date:** [March 30, 2022, 8:16am UTC](https://forum.mautic.org/t/fresh-install-not-sending-emails-nl-form/23339/8 "2022-03-30T08:16:27Z")

</div>

Update.

I setup a SendGrid account, validated my domain (on CF) and connected to Mautic via SendGrid API. I finally managed to deliver my first custom email.

It seems to me there’s an issue in Mautic SMTP relay when it comes to ‘other smtp’.

When testing an email from under Configuration → Email settings I am able to receive it.  
When sending a custom email (haven’t tried a mass/campaign mailing) it looks like Mautic is unable to use the settings as saved under Configuration → Email settings and it returns this errors.

mautic.ERROR: [MAIL ERROR] Expected response code 354 but got code “503”, with message "503-All RCPT commands were rejected with this error: 503-Unexisting, forged or unallowed sender address 503

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<div class="post-metadata">

**Author:** ![mzagmajster](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/mzagmajster/32/687_2.png) [@mzagmajster](https://forum.mautic.org/u/mzagmajster)\
**Post date:** [March 30, 2022, 11:23am UTC](https://forum.mautic.org/t/fresh-install-not-sending-emails-nl-form/23339/9 "2022-03-30T11:23:29Z")

</div>

I would say if it works now, some settings must be used properly?

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<div class="post-metadata">

**Author:** ![wlsfh](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/wlsfh/32/6731_2.png) [@wlsfh](https://forum.mautic.org/u/wlsfh)\
**Post date:** [March 30, 2022, 12:03pm UTC](https://forum.mautic.org/t/fresh-install-not-sending-emails-nl-form/23339/10 "2022-03-30T12:03:28Z")

</div>

Not the case.

Mautic seems to have issues with ‘other smtp servers’ type of configuration, regardless of the configuration. I tried with and without SSL, different ports etcc… It does work on test mode, but when sending actual emails ‘send a custom email to…’ it looks like it ignores the general settings and returns and error.

Different story if you use a SMTP gateway, like Sendgrid, as it is working for me now (but not the choice I’d make as I want to use my SMTP server).

---

<div class="post-metadata">

**Author:** ![mzagmajster](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/mzagmajster/32/687_2.png) [@mzagmajster](https://forum.mautic.org/u/mzagmajster)\
**Post date:** [March 30, 2022, 12:31pm UTC](https://forum.mautic.org/t/fresh-install-not-sending-emails-nl-form/23339/11 "2022-03-30T12:31:20Z")

</div>

For a while I think I used Other SMTP option only in dev. environment, but it worked at the time. Maybe I will test it again just to see the situation. Thanks for pointing it out @wlsfh

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<div class="post-metadata">

**Author:** ![synergetic](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/synergetic/32/6765_2.png) [@synergetic](https://forum.mautic.org/u/synergetic)\
**Post date:** [March 30, 2022, 1:48pm UTC](https://forum.mautic.org/t/fresh-install-not-sending-emails-nl-form/23339/12 "2022-03-30T13:48:32Z")

</div>

I still have the issue, i opened a ticket but it was forgotten, and i gave up; I only have “other smpt” relays, so if this is the issue i won’t be able to use mautic for the time being ☹

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<div class="post-metadata">

**Author:** ![wlsfh](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/wlsfh/32/6731_2.png) [@wlsfh](https://forum.mautic.org/u/wlsfh)\
**Post date:** [March 31, 2022, 12:15pm UTC](https://forum.mautic.org/t/fresh-install-not-sending-emails-nl-form/23339/13 "2022-03-31T12:15:54Z")

</div>

You can bypass this issue (if that’s the issue) by using your smtp on SendGrid. To a certain extent is free.

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<div class="post-metadata">

**Author:** ![ayayron](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/ayayron/32/10341_2.png) [@ayayron](https://forum.mautic.org/u/ayayron)\
**Post date:** [November 9, 2022, 7:28pm UTC](https://forum.mautic.org/t/fresh-install-not-sending-emails-nl-form/23339/14 "2022-11-09T19:28:36Z")

</div>

Hello, I just like to say I had this same issue with the 550 errors when having mautic send out an email, I put in a ticket to my hosting support team showing them the error message along with the log file that offers the same information. They did some fixing on their mail server itself and after that, everything was back to operating without any errors. Sometimes these errors are directly related to hardware / the web hosting that you have no control over. I am using my own SMTP from my web hosting server with my domain. This also has the same issues if you are trying to use your email with a 3rd party application that also is listed with Mautic. It always starts at the hosting where your domain is setup and where your email was created. If something happens with errors with email for sending or receiving I would check with your hosting support people next time. Saves a lot of time and frustration.

This article also helps with the 550 error and also the [mautic+bounced@email.com](mailto:mautic+bounced@email.com)  
[How does email bounce work in mautic](https://netcorecloud.com/tutorials/mautic-bounce-management/)