On Fri, Mar 15, 2013 at 12:43 AM, Austin Einter <austin.einter at gmail.com> wrote: > Thanks John > By the way I checked with my service provider. Their ISP does not block 25. > But to successfully deliver SMTP mail, I need to use their relay server (it > uses port 25 only). If you can't deliver directly yourself, that means they do block port 25. -- Les Mikesell lesmikesell at gmail.com