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ColmanC · 12-12-2003, 15:46

I'm running my own smtp server behind an NTL 600K service (long story...and largely irrelevant to this issue). A ouple of weeks ago I started having problems sending emails...they would all bounce back saying that the destination server could not be found. We're not talking about obscure addresses here either...the likes of hotmail.com and yahoo.com aren't working.

Additionally, when I try to telnet to hotmail.com port 25 then nothing, although hotmail.com port 80 works.

My assumption is that NTL have starrted blocking outgoing port 25 traffic. Anyone know if this is true...and why ? It's not a show-stopper of a problem, I can simply re-configure my mail client to send via NTL's smtp server, but I like having the freedom to choose.

Many thanks in anticipation.

12-12-2003, 15:46	#1
ColmanC Inactive Join Date: Dec 2003 Posts: 6	Outgoing SMTP (port 25) blocked ? I'm running my own smtp server behind an NTL 600K service (long story...and largely irrelevant to this issue). A ouple of weeks ago I started having problems sending emails...they would all bounce back saying that the destination server could not be found. We're not talking about obscure addresses here either...the likes of hotmail.com and yahoo.com aren't working. Additionally, when I try to telnet to hotmail.com port 25 then nothing, although hotmail.com port 80 works. My assumption is that NTL have starrted blocking outgoing port 25 traffic. Anyone know if this is true...and why ? It's not a show-stopper of a problem, I can simply re-configure my mail client to send via NTL's smtp server, but I like having the freedom to choose. Many thanks in anticipation.