Support / SUP-1039
Almwerk: Outlook shows our notices as sent 'via' another domain
Description
Outlook zeigt Ihre E-Mails als "notices@acme-hq.example über mc1.mailcrest.example" an. Mehrere Kolleginnen und Kollegen haben sie unserer IT als Phishing gemeldet.
Comments (5)
Elif Yildiz · 17 Jul 2026, 13:40 UTCInternal note
Return-path is Mailcrest's default domain, so Outlook shows 'via'. Setting a custom return-path on acme-hq.example (DNS + Mailcrest config). Next week.
Ines Costa · 17 Jul 2026, 14:00 UTC
Hi Lisa, Outlook shows "via" because our mail provider sends on our behalf with its own address in the background. We're changing that so the emails come from our own domain all the way through. Next week.
Elif Yildiz · 22 Jul 2026, 13:30 UTCInternal note
Custom return-path live. Test to an Outlook mailbox shows no 'via'.
Ines Costa · 22 Jul 2026, 14:00 UTC
Hi Lisa, changed today: Outlook no longer shows the "via" line on our emails. Closing.
Elif, Outlook shows 'via mailcrest' on our notices for Almwerk. Can we align the sending domain?