On Fri, Nov 22, 2013 at 7:38 AM, Lists lists@benjamindsmith.com wrote:
How to get postfix working on CentOS 6 and Comcast. Recently, they've changed their policies regards email relay and require authentication even to send email. (they no longer use IP address ranges, presumably in an attempt to curb outgoing SPAM)
I didn't see an updated howto anywhere on the Interwebs, thought I'd point out what I had to do. The part that had me stumped for longer than I care to admit was having to install cyrus-sasl-plain rpm - EL5 apparently had that installed as part of the cyrus-sasl package.
search keywords gave ample links with pretty much the same documents
Here is one specifically for CentOS with GMail as smtp smart host. Replace Gmail smtp host with Comcast smtp host and change port 587 if Comcast is using something different.
http://blog.earth-works.com/2013/05/14/postfix-relay-using-gmail-on-centos/
HTH,