Forum Discussion
Mail to Team Cannel - Remote Server returned '554 5.4.0'
Hi I have a strange effect with sending Mail to a Teams Channel. If send an external User user1@domain.com a mail to the Teams channel, the recive a NDR with the following text Remote Server return...
MySergius We're experiencing the same issue. I've rebuild my scripts so that SendGrid is used for mail distribution but that also ends up with the error 400. Main issue is that the 'sending ip' appears to be not responsive for that domain. It suggests it has something to do with SPF.