Sudden SMTP server peer connect failure

reno · Mar 10, 2005, 08:35 PM

I don't know if you can help with this, but my hosting on the server virgin2.super.nu abruptly started failing both SMTP and FTP requests with connection refusals and timeouts. I got my FTP working by setting the program to passive mode (at the time, and since then, I haven't changed ANY setting at all hardware or software wise, and the service worked just fine before that)...but my email still gives me a peer connect failure, my connection is being refused for sending messages only, receiving works just fine.

Are there any common reasons why this may happen? The server performance is relatively speedy, there are no drops or ping timeouts, no backbone blackholes...but neither outlook or pegasus can send e-mail anymore, and I have to use my website's e-mail function to do so (via squirrelmail).

Any ideas? My freaking provider has been telling me it's fixed, but it's not...I've tested by turning my hardware and software (and windows) firewalls off, we're running with SBC 1.5/384 DSL...no changes there either..

It's frustrating!

md5 · Mar 11, 2005, 10:47 AM

Try enabling SSL for your outgoing messages
Also, you should get in contact with the server admin

Yousaif · Mar 13, 2005, 04:09 AM

Have you tried telnetting to the SMTP server on port 25?

At a command prompt:

telnet smtp.yourserver.nu 25 <hit enter>

See if it connects. If not, then your ISP may be blocking port 25 (the SMTP port) from leaving its network. More and more ISP's are restricting port 25 in an effort to stem virus and spam traffic from their networks.

--Saif

Mar 10, 2005, 08:35 PM	#1
reno Painlord of Ichor Join Date: May 2002 Location: bloinkin! Posts: 1,610 Rep Power: 0	Sudden SMTP server peer connect failure I don't know if you can help with this, but my hosting on the server virgin2.super.nu abruptly started failing both SMTP and FTP requests with connection refusals and timeouts. I got my FTP working by setting the program to passive mode (at the time, and since then, I haven't changed ANY setting at all hardware or software wise, and the service worked just fine before that)...but my email still gives me a peer connect failure, my connection is being refused for sending messages only, receiving works just fine. Are there any common reasons why this may happen? The server performance is relatively speedy, there are no drops or ping timeouts, no backbone blackholes...but neither outlook or pegasus can send e-mail anymore, and I have to use my website's e-mail function to do so (via squirrelmail). Any ideas? My freaking provider has been telling me it's fixed, but it's not...I've tested by turning my hardware and software (and windows) firewalls off, we're running with SBC 1.5/384 DSL...no changes there either.. It's frustrating!

Mar 11, 2005, 10:47 AM	#2
md5 DriverHeaven Senior Member Join Date: Dec 2004 Location: Inside DriverHeaven Posts: 856 Rep Power: 0	Try enabling SSL for your outgoing messages Also, you should get in contact with the server admin __________________

Mar 13, 2005, 04:09 AM	#3
Yousaif Allergic to WiFi Join Date: Jan 2005 Location: Wyoming, MI, USA Posts: 852 Rep Power: 0	Have you tried telnetting to the SMTP server on port 25? At a command prompt: telnet smtp.yourserver.nu 25 <hit enter> See if it connects. If not, then your ISP may be blocking port 25 (the SMTP port) from leaving its network. More and more ISP's are restricting port 25 in an effort to stem virus and spam traffic from their networks. --Saif