Or an easier solution is to use a "smart host" which is your ISP's mail server acting as a forwarder when you're sending mail. The same mail server you use to send mail for your ISP e-mail account should work. Brian D. Ropers-Huilman wrote: > On 4/3/07, Jon Schewe <jpschewe at mtu.net> wrote: > >> Has anyone else run across this? As of today I'm no longer able to send >> mail through my mailserver (mtu.net) port 25 as comcast is blocking all >> outgoing connections on port 25 for "my protection". >> > > This is a fairly common practice to prevent you from using mail > servers that are not their own. One easy solution is to setup your MTA > to listen on another port (I've used 2525) or to send via SSL/TLS as > they never think to block 465. > >