outboundmail: Sender Adress Rejected

[phd]

Hi,
I'm lost,

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:
smtpauth.rollernet.us
Remote Server returned '550 5.1.7 <kristof@k-e.be>: 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.

Phil

[phd]

Sems I was to impatient.

Retest 10 Min ago and now seems to work OK

Case Closed.