Can't send mail to netsolmail.net

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Can't send mail to netsolmail.net

I have an issue with Network Solutions mail server. mail.log tells me "1AB2A471F17A 14510 Wed Apr 29 12:54:29 nicholas.olinsky@sunnyside.wednet.edu (lost connection with inbound.jteconsulting.net.netsolmail.net[205.178.149.7] while receiving the initial server greeting)" It will eventually time out of the queue. I have contacted the addressee and they can be in touch with Network Solutions and they say the issue is not on their end. I don't know where to begin troubleshooting.

xserve, Mac OS X (10.5.6)

Posted on Apr 29, 2009 1:23 PM

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Answer 1

pterobyte

Level 6

11,104 points

Apr 30, 2009 12:07 AM in response to Nic Olinsky

There are a few possible reasons. To narrow it down, could you open a Terminal window on your server and issue:
telnet inbound.jteconsulting.net.netsolmail.net 25

If you can connect to the mail server, simply issue quit and we'll take it from there.

If you get rejected immediately, your IP is on a blacklist at netsolmail.net. Doesn't mean your IP is blacklisted anywhere else, but recently some ISPs started simply blocking entire IP blocks because there were some offending IPs in them. One of the biggest offenders are users of Symantec/Brightmail Symantec Mail Security Gateways. Should this be the issue, you will need to ask jteconsulting.net to request Netsol for you to be whitelisted.

HTH,
Alex

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Answer 2

Nic Olinsky Author

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Apr 30, 2009 10:34 AM in response to pterobyte

The tech contact from jtecounsulting has been in contact with Network Solutions and they say there is no issue on their end, but as with most large corporations I would expect them to come from the position that the problem isn't their fault unless there is evidence to the contrary (and sometimes not even then.

I can telnet to their port 25. And while testing yesterday I did get a message through, but all the others eventually age out of the queue. I adjusted the main.cf to add debug peerlist = 205.178.149.7 and had to bump debug peerlevel = 7 to get it to log the full conversation between the server (I can't find any info on what to set debug peerlevel to other than default of 2 which didn't seem to have any effect on logging levels). It was after I did this that the mail actually went through.

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Answer 3

pterobyte

Level 6

11,104 points

Apr 30, 2009 11:30 AM in response to Nic Olinsky

If you can telnet to it, then your IP is not blocked at the connection level, which is good.

Any chance you are using a PIX Firewall? If yes, try and turn off the SMTP fixup protocol.

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Answer 4

Nic Olinsky Author

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Apr 30, 2009 12:20 PM in response to pterobyte

I'm using a SonicWall and it shows the connection open and close but no other indication of an issue. I have had another test message that was delivered about 10 minutes after the original "lost connection" attempt, but another that is still in the queue after an hour.

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Answer 5

pterobyte

Level 6

11,104 points

Apr 30, 2009 12:27 PM in response to Nic Olinsky

If you requeue, will it go through?

sudo postuper -r ALL

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Answer 6

Nic Olinsky Author

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Apr 30, 2009 2:32 PM in response to pterobyte

postsuper didn't have any effect, but postfix flush did. In other testing I have had a message delivered after a 20 minute delay after the first connection, and one that went through on the first connection. I have a suspection something has changed on their end, as I haven't done anything on my end other than up the debug level.

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