Send Mail timed out

Question

Send Mail timed out

Ok, so I'm relatively new to OS x server but I consistantly am having a sendmail problem. I can receive mail and send mail "most" of the time. But, I do get errors when sending to blackberry's, hotmail, and essentially random domains. What I get are conection timed out error. Heres an example from my SMTP log :

Nov 9 19:36:56 (servername) postfix/smtp[21684]: connect to mail.senecac.on.ca[142.204.1.36]: Operation timed out (port 25)

First of all, anyone have any comments or solutions?

Second On my router I have doubled/triple checked that my port 25 is open. I can send send mail to some domains with no fail. When i send to my blackberry i get log data like this :

Nov 9 19:31:02 Winterswarmth postfix/smtp[21627]: A566E3F45C: to=<ajhellin@learn.senecac.on.ca>, relay=none, delay=30, status=deferred (connect to mail.senecac.on.ca[142.204.1.36]: Operation timed out)
Nov 9 19:31:02 Winterswarmth postfix/smtp[21628]: connect to mx1.rog.mail.yahoo.com[67.28.113.16]: Operation timed out (port 25)
Nov 9 19:31:32 Winterswarmth postfix/smtp[21628]: connect to mx1.rog.mail.yahoo.com[64.156.215.23]: Operation timed out (port 25)
Nov 9 19:32:02 Winterswarmth postfix/smtp[21628]: connect to mx2.rog.mail.yahoo.com[66.94.225.172]: Operation timed out (port 25)
Nov 9 19:32:03 Winterswarmth postfix/smtp[21628]: A566E3F45C: to=<hellin@rogers.com>, relay=mx2.rog.mail.yahoo.com[206.190.37.6], delay=91, status=sent (250 ok dirdel)

In the end it send, it just takes several attempts.
Any help would be appreciated.

G4 Cube dual 500's, Mac OS X (10.4.8), 2 new ibooks bw g3

Posted on Nov 9, 2006 5:22 PM

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Answer 1

Nov 9, 2006 6:51 PM in response to AndrewWireless

Ok, so I've figured out now that my ISP blocks Port 25. Fine.

So I've cracked open my master.cf added the line
587 inet n - n - - smtpd
cracked open my router opened up and routed 587

i cracked open squirrellmail config and changed all smtp ports to 587

restarted the server, and still squirrellmail wants to send through port 25 anyone have any other things i may have missed? and to be sure i changed all the squirrellmail config files that are in the folder.

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Answer 2

pterobyte

Level 6

11,098 points

Nov 11, 2006 6:10 AM in response to AndrewWireless

I think you are confusing things here.

While you can change the port used for submission from your mail clients to your mail server, you cannot (should not) change the outgoing port for your smtp server. All mail servers expect incoming traffic on port 25, thus using port 587 will not get your mail delivered (it will go through your firewall, but that's about it).

If your mail server (not client) is behind a firewall with port 25 blocked, there is no way it can send mail to outside domains. So either get your ISP to let port 25 through for your server or use your ISP's smpt server to send mail (this can be done directly, or through your mail server relaying through your ISPs server).

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