My mail server can't receive mail from some places like Facebook.

[coreyman]

I've looked at all the logs and I can't for the life of me figure out why some places can't send me mail? My mail server is mail.manshack.me

I'm using postfix and dovecot.

 

[k0nsl]

Did you enable greylisting, by any chance?

 

[coreyman]

Did you enable greylisting, by any chance?

Not that I know of, where can I check that. I don't have any spam software installed that I know of.

 

[lowesthost]

perhaps this will help

http://serverfault.com/questions/653664/cant-receive-mails-from-gmail