I've got my own domain name with my (CentOS 6.4) Linux box running as primary MX (two back-up MX off site). At home, I can get to my mail server from Thunderbird on my LAN, since sending the password across the wire in plain isn't an issue.
Away from home, I use either horde.org's webmail solution, or if I want to 'go retro', I ssh in and run mutt.
Everyone's happy, except my iPhone. I cannot get the iPhone to connect to my mail server, so I'm guessing it's port-related, or SSL ?
My apache server has SSL certificates, but I'm guessing that it's a different set of certs for sendmail?
Can someone help?