Since about 1 mounth, i’ve got issues with emails sending where client are microsoft exchange subscriber.
I know this is not the place for debate for this subject, but I wanna know if anyone have encountered the same problem recently.
I’ve two mail server in the same datacenter, and each IP was blocked by proofpoint, but not blacklisted as mail-tester say. It result that all microsoft exchange recipient can’t recieve our emails because of proofpoint.
Proofpoint seem to be unreachable because a lot of spammers cant to be whitelisted. Bbefore contacting them, I wanna know more and if I can get around this shit. Very problematic