I self host invoice ninja and have a question regarding sending mails.
There is 1 recipient where the automatic mails don’t come through.
I use an office 365 as main e-mail account firstname.lastname@example.org and change the FROM email to this adress. However in order to send the mails I use a different domain email@example.com with SMTP. This has worked for 99% of my recipients only this 1 I get an error.
This message was created automatically by mail delivery software.
A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed: (email account)
host mx2.pub.mailpod5-cph3.one.com [188.8.131.52]
SMTP error from remote mail server after end of data:
550 5.7.1 SPF check failed
So they reject my message because I configured the FROM mail from my other domain that the emails is sending. Is there a possibility to add my office365 as the primary mail sender? And how do I do that or can I only use the SMTP one from the other domain?
I hope this is somewhat clear.
Thanks in advance