Problem with fake emails

Product Support
1

Your software
My Mautic version is: 3.3.2
My PHP version is: 7.4.19
My Database type and version is: mysql Ver 15.1 Distrib 10.5.9-MariaDB, for Linux (x86_64) using readline 5.1
Email server : postfix owned (postfix / rspamd / clamd)

Your problem
My problem is: when I run Cron Jobs, it fails as soon as a fake email happens.

These errors are showing in the log:

# php /var/www/html/mautic/bin/console mautic:emails:send
In LoggerPlugin.php line 124:                                                                                                                                                                                                                                                                                                                               
[…..]                                                                                                                        
.                                                                                                                                                                                                                                                                                                                                   
<< 250 2.0.0 Ok: queued as 8CFCD411080B         
> > MAIL FROM:<marketing+bounce_60a3e5be63bb6932332778@mydomain.tld>                                
>> RCPT TO:<contact@fakedomain.tld>                                                                                                                       
>> DATA                                                                                                                                                                 
<< 250 2.1.0 Ok                                                                                                                                                    
<< 450 4.1.2 <contact@fakedomain.tld>: Recipient address rejected: Domain not found                                                                       
!! Expected response code 250/251/252 but got code "450", with message "450 4.1.2
<contact@fakedomain.tld>: Recipient address rejected: Domain not found  " (code: 450) 
<< 554 5.5.1 Error: no valid recipients !! Expected response code 354 but got code "554", with message "554 5.5.1 Error: no valid recipients " (code: 554) (code: 554)

Then I must restart cron job a lot, email is marked as “bounced” at the third time. Is there a way to mark email as bounced and continue automatically cronjob ? I’ve searched from postfix side, bounce mailbox works fine. I do not understand why cronjob crash when a fake domain happens ?

Thank you.
Romain

2

Update

Strange thing happens when a fake email is in the list:

<< 250 2.0.0 Ok: queued as B069F40E9ACB
>> MAIL FROM:<marketing+bounce_60a639d61d47f311270907@mydomain.tld>
>> RCPT TO:<ch@chhc.ch>
>> DATA
<< 250 2.1.0 Ok
<< 450 4.1.2 <ch@chhc.ch>: Recipient address rejected: Domain not found
!! Expected response code 250/251/252 but got code "450", with message "450 4.1.2 <ch@chhc.ch>: Recipient address rejected: Domain not found" (code: 450)
<< 554 5.5.1 Error: no valid recipients
!! Expected response code 354 but got code "554", with message "554 5.5.1 Error: no valid recipients" (code: 554) (code: 554)

At this time, cron job fails.
Now I manually restart cron job but it loads fake email and the next one in the same message ? :

#  php /var/www/html/mautic/bin/console mautic:emails:send
In LoggerPlugin.php line 124:
[system tries to resend multiple times to ch@chhc.ch wich is a fake email]
[...]
<< 450 4.1.2 <ch@chhc.ch>: Recipient address rejected: Domain not found!! Expected response code 250/251/252 but got code "450", with message "450 4.1.2 <ch@chhc.ch>: Recipient address rejected: Domain not found" (code: 450)                                                                                                                                 
<< 554 5.5.1 Error: no valid recipients!! Expected response code 354 but got code "554", with message "554 5.5.1 Error: no valid recipients" (code: 554) (code: 554)
>> MAIL FROM:<marketing+bounce_60a639d61e527973090765@mydomain.tld>
>> RCPT TO:<nextcontact@hotmail.co.uk>
>> DATA 
<< 503 5.5.1 Error: nested MAIL command  !! Expected response code 250 but got code "503", with message "503 5.5.1 Error: nested MAIL command " (code: 503) (code: 503)

And now, cron job fails again, and both emails are marked as “bounced” (ch@chhc.ch and nextcontact@hotmail.co.uk which is a real email).

Each time I have a fake email, the fake email and the next record are marked as bounced.