I have multiple domains using the outmail without any problems but the last one from yesterday keeps making problems I cannot inderstand/
Error error msg:
Remote Server returned '550 5.1.7 <firstname.lastname@example.org>: Sender address rejected: undeliverable address: Unable to accept MAIL FROM sender. Please read https://acc.rollernet.us/help/mail/outb ... strictions'
I have on the same exchange server other domains (deffet.be, virtualit.be) thatare working correctly but I cannot send out mails from the new domain.
Mx records exist and global list is enabled, I do not seen why it doesn't work.
I re-tried this morning to be sure to avoid the caching problem but it still refuse to send out.
Does somebody already had the same problem and knows a solution
Thanks in advance.
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