Sounds like your provider has blocked port 25 if you are telnetting in over the internet.  In my area, at&t did that without notification years back and we'd suddenly get calls from groups of customers living in the same area.  We had to switch each of the customers to use port 587 and posted a message to all our users about the fact it could occur to them in the future.


On Oct 27, 2010, at 10:45 AM, Chris Guest wrote:

> Suddenly today I started receiving calls from my Outlook and Thunderbird users who are having problems sending messages.  They all receive the “time-out” message communicating with the server.  I checked my own outlook (2007) and sure enough same problem.
> 
> SurgeMail Version 5.0m-1, Built Oct 18 2010 21:02:04, Platform Linux (Surgeweb Enabled)
> 
> Surgeweb is working fine… no problems there.
> We have made no firewall changes.
> 
> Last ditch effort… I changed the smtp port from 25 to 587 and my machine will now send.  If I switch back to port 25 I get the time outs.
> 
> The only changes that have been made in the last couple days to the server were the installation of a digital certificate yesterday morning.  I don’t think this is anything to do with that since everything has been working until mid-morning today.
> 
> From a command prompt I checked port 25 using telnet and this is what I get:
> 220 ***************************************************************
> 
> From a command prompt I checked port 587 using telnet and this is what I get:
> 220 grady.k12.ga.us SurgeSMTP (Version 5.0m-1) http://surgemail.com
> 
> Does ANYONE have any ideas or thoughts on this?
> ---
> Thanks,
> Chris
> 
> Chris Guest,
> Director of Technology/E-rate Coordinator
> Grady County School District
> Phone: (229)377-8258 Fax: (229)378-1199
> Email:HIDDEN@@grady.k12.ga.us
> 
> 
>