Again - forwarded mails don't arrive in tape

[dirk_s]

Hi @Tim,
again we are missing forwarded mails. How was it solved finally?
This were automatically routed from atlassian notifications via our domain to the tape app mail.

Old ticket:

[DONE] Issues with email to app when forwarding an email

Hi @Kollaborateur, the Tape team performed some log-forensics, and we were able to trace this down to a particular rejected email pattern. Even though your screenshot only contains a redacted sender email address, it matches what we see and we could correlate via the timestamp So far, this appears like an overly strict validation inside our inbound email pipeline. Our logs only show this error happening once a month though - does that match your observation? Logs: 2026-04-03 07:29 …

[Tim]

Hi @dirk_s,

thanks for reporting this.

Do you have timestamps of a few of the emails that did not get through? Is the problem reproducible or intermittent? Do the mails that fail to arrive come from the same sender only or multiple ones?

Thanks in advance for any extra insight
Tim