I have a server that can't send e-mails to some Hotmail accounts. How could I fix this?
For Gmail accounts, it sends well.
I saw the headers of an e-mail sent to a Gmail account and can confirm that SPF and DKIM are correctly set.
I also checked here if the IP is blacklisted and it wasn't.
What else could it be?
I just want a LIST of all the things that I should try to find why my e-mails are not received by Hotmail accounts.
I tried everything I saw on the Web but without success. Maybe I'm missing something and this is what I want to know with this LIST that I'm asking for.
My clients are starting to complain about this issue...
By the way, I'm new in this type of e-mail problems.