Gmail emails in quarantine

[chekmate1984]

Hi all

 

has anyone encountered this before where all gmail emails, even though they legit all going to office 365 quarantine and we have to manually unblock. Its becoming extra work and i cant see anywhere where i can check to see why its going there. I have not made any changes recently so its bugging me.

 

any ideas where i can check?

 

thanks

[TwistedHelixis]

Have you got SPF, DKIM etc setup, if not other mail server might reject your mail.