# Campaign Email Not Sending ::  Custom Email Getting 500 Internal Server Error

**URL:** <https://forum.mautic.org/t/campaign-email-not-sending-custom-email-getting-500-internal-server-error/3313>\
**Category:** Product Support\
**Created:** [January 26, 2016, 4:46am UTC](https://forum.mautic.org/t/campaign-email-not-sending-custom-email-getting-500-internal-server-error/3313 "2016-01-26T04:46:15Z")\
**Posts on this page:** 1\
**Showing post:** 24

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**Author:** ![izojunior](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/izojunior/32/3704_2.png) [@izojunior](https://forum.mautic.org/u/izojunior)\
**Post date:** [October 20, 2020, 3:23pm UTC](https://forum.mautic.org/t/campaign-email-not-sending-custom-email-getting-500-internal-server-error/3313/24 "2020-10-20T15:23:52Z")

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I have the same problem 😢

> [@Error 500 sending email](https://forum.mautic.org/t/error-500-sending-email/16644):
>
> Software My Mautic version is: 3.1.1 My PHP version is: 7.3.23 Problem I will configure SMTP correctly. I performed the connection test successfully, but when sending the test email, Mautic presented error 500. What can that be? Log [2020-10-19 17:43:17] mautic.CRITICAL: Uncaught PHP Exception Swift\_RfcComplianceException: “Address set in PathHeader does not comply with addr-spec of RFC 2822.” at /home/simuleonline/public\_html/crm/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mime/Heade…

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