# SMTP mail sending error

**URL:** <https://forum.mautic.org/t/smtp-mail-sending-error/17532>\
**Category:** Product Support\
**Created:** [December 23, 2020, 8:34am UTC](https://forum.mautic.org/t/smtp-mail-sending-error/17532 "2020-12-23T08:34:33Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![k0styan](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/k0styan/32/4143_2.png) [@k0styan](https://forum.mautic.org/u/k0styan)\
**Post date:** [December 23, 2020, 8:34am UTC](https://forum.mautic.org/t/smtp-mail-sending-error/17532/1 "2020-12-23T08:34:33Z")

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My Mautic version is: 3.2.1  
My PHP version is: 7.2.34  
My Database type and version is: mysql Ver 15.1 Distrib 5.5.68-MariaDB

My problem is:

When I trying to send test email after configure mautic I have error with SMTP server.  
My SMTP server allows send mail with header FROM only suitable with name of mailbox, but mautic add to header string “+bounce” ([info+bounce@mydomain.com](mailto:info+bounce@mydomain.com) instead [info@mydomain.com](mailto:info@mydomain.com))

How I can disable it?

These errors are showing in the log:

Steps I have tried to fix the problem:

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<div class="post-metadata">

**Author:** ![mikew](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/mikew/32/5156_2.png) [@mikew](https://forum.mautic.org/u/mikew)\
**Post date:** [December 23, 2020, 8:40am UTC](https://forum.mautic.org/t/smtp-mail-sending-error/17532/2 "2020-12-23T08:40:09Z")

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in an email, have you defined your sender address in the Advanced Section ?

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<div class="post-metadata">

**Author:** ![k0styan](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/k0styan/32/4143_2.png) [@k0styan](https://forum.mautic.org/u/k0styan)\
**Post date:** [December 23, 2020, 8:40am UTC](https://forum.mautic.org/t/smtp-mail-sending-error/17532/3 "2020-12-23T08:40:39Z")

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“Name to send mail as”  
and  
“E-mail address to send mail from”

in config is set to [info@mydomain.com](mailto:info@mydomain.com)

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<div class="post-metadata">

**Author:** ![k0styan](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/k0styan/32/4143_2.png) [@k0styan](https://forum.mautic.org/u/k0styan)\
**Post date:** [December 23, 2020, 8:55am UTC](https://forum.mautic.org/t/smtp-mail-sending-error/17532/4 "2020-12-23T08:55:01Z")

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From name  
From address  
and Reply to address

is set in Advanced Section too with [info@mydomain.com](mailto:info@mydomain.com)  
but mautic set header FROM to info+bounce\_5fe3050ce112e278616498 when connect to SMTP server

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<div class="post-metadata">

**Author:** ![k0styan](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/k0styan/32/4143_2.png) [@k0styan](https://forum.mautic.org/u/k0styan)\
**Post date:** [December 23, 2020, 8:58am UTC](https://forum.mautic.org/t/smtp-mail-sending-error/17532/5 "2020-12-23T08:58:18Z")

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When I trying to send email via console (swiftmailer:email:send) and type correct header FROM mail is delivering

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<div class="post-metadata">

**Author:** ![k0styan](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/k0styan/32/4143_2.png) [@k0styan](https://forum.mautic.org/u/k0styan)\
**Post date:** [December 24, 2020, 7:25am UTC](https://forum.mautic.org/t/smtp-mail-sending-error/17532/6 "2020-12-24T07:25:08Z")

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Does any one know how to disable it?