With ClearOS 6 I was never able to get outgoing mail to work decently. Sure I could have used Comcast as a relay but then all my mail shows a bunch of Comcast junk as the sender. Pass. For some reason I don’t remember I could not get it to work well with Google;s servers either.
Well now I am running ClearOS 7, and the email seems to work flawlessly out of the box. I simply entered my Google mail settings (worked just fine with a Google Apps Domain) and hit the “Update and test” button – BAM! Email delivered. I am so happy right now.
There was one small catch, not any Gmail config worked. Here is what I used: Port 465 with SSL, 587 with TLS wouldn’t work for me. This was for ClearOS using Google SMTP servers with Comcast as the ISP.