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We just upgraded to the latest civi 5.62.0 and after doing so when we send an email out of the system it sends a seemingly random string @ our domain name as the "from". Here's an email header:

[email protected]
[email protected]
...and so forth and so on always different but it seems to increment upward.

This system uses PHP version 8.1.20 which meets or exceeds the recommendation of 7.4. Extensions All extensions are up-to-date:

Access Control by Financial Type for Reports: Version 2.0
AuthX: Version 5.62.0
Civi-Import: Version 5.62.0
CiviCRM Administration UI: Version 5.62.0
CKEditor4: Version 5.62.0
Custom search framework: Version 5.62.0
Event Cart: Version 5.62.0
ExtendedReport: Version 5.21
Financial ACLs: Version 5.62.0
FlexMailer: Version 5.62.0
Form Core: Version 5.62.0
Membership Renewallinks: Version 1.1
reCAPTCHA: Version 5.62.0
SearchKit: Version 5.62.0
Sequential credit notes: Version 5.62.0
Theme: Greenwich: Version 5.62.0

Is there a bug in a file that creates the mail that creates a random string@...? I also disabled the original system default email and created a new one with the same odd result.

I downloaded a copy of the mariadb / mysql database and searched through it but I only see our configured mail in there correctly. This is beyond my scope of knowledge.

Can anyone assist in tracking down what file in the system is doing this and some code to tweak this behavior?

Thanks!

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  • At Administer - CiviMail - CiviMail Component Settings, do you have Track replies using VERP in Reply-To header checked?
    – Demerit
    Commented Jun 15, 2023 at 21:04
  • I back rev'd to PHP 7.4 since we also upgraded to PHP 8.1. When back rev'ing to PHP 7.4 it worked as expected and perfectly. Something must be up with however that all works :-)
    – A Civi Admin Kinda
    Commented Jun 16, 2023 at 1:57
  • the fact is starts with a b. to me means it is using bounce tracking and hence this 'random' stuff is how civimail tracks the bounces
    – petednz - fuzion ♦
    Commented Jun 16, 2023 at 2:09
  • @Dermit yes but that is unticked. The ticked options are: Enable Double Opt-in for Profile Group(s) field, Enable CiviMail to generate Message-ID header, Enable CiviMail to create activities on delivery, CiviMail dedupes e-mail addresses by default, Enable automatic CiviMail recipient count display, Enable click-through tracking by default, Enable open tracking by default, Use Smarty in scheduled reminders Cron seemed to break with a .par file process too that calls the mail api for sending. I had to copy it back after the upgrade. That's another problem for another time!
    – A Civi Admin Kinda
    Commented Jun 16, 2023 at 3:01
  • @petendz that's likely! Good catch! We were using it before too, I haven't changed anything after upgrading so why would it be "fixed" in PHP 7.4 but break in PHP 8.1...? It must be a code problem between 7.4 and 8.1 eh?
    – A Civi Admin Kinda
    Commented Jun 16, 2023 at 3:03

1 Answer 1

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Emails have two "from" addresses. One is the 'smtp-from' or 'envelope-from', and the other one ('header from') is the one that you see in your email program.

The email addresses you are referring to are for "bounce tracking", and normally, they would be set as the smtp-from, but not the header-from, and you wouldn't see that as the recipient, you'd see the address you (the sender) put as the (header) from address.

If the issue is that you are now seeing the smtp-from/envelope-from address as the header-from (after the php upgrade), then I suspect it has to do with some handling of the mail after it leaves civicrm, i.e. by whatever php has setup for it's mail. There's probably some simplified mail agent that drops the header from and then it gets replaced by the smtp-from.

I'll go out on a limb and guess that your previous setup might not have included bounce handling anyway.

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