I've broken email on my server!

[jdearing]

I checked the RBL list and Sender Verification Callouts in the Exim config and stopped getting emails all together.

I have since unchecked both and still not getting emails.

I reset the exim config to defaults and still nothing.

 

[cPanelDon]

I checked the RBL list and Sender Verification Callouts in the Exim config and stopped getting emails all together.

I have since unchecked both and still not getting emails.

I reset the exim config to defaults and still nothing.

When sending a test message I would check the Exim log to monitor for errors and any indications of a possible cause.

Via root SSH access, here is a command that may be used to monitor for new entries in the Exim main log:

# tail -fvn0 /var/log/exim_mainlog

 

[jdearing]

Here is a sample of the log. The one in bold is the test message I sent from my desktop. It never shows up in the inbox for the account on the server.

---------------------------------------------

2009-12-22 21:38:56 1NNI3r-0004wq-AR <= [email protected] H=(157.44.115.124.broad.ya.sn.dynamic.163data.com.cn) [124.115.44.157] P=esmtp S=1648 [email protected]
2009-12-22 21:39:00 H=(157.44.115.124.broad.ya.sn.dynamic.163data.com.cn) [124.115.44.157] Warning: Sender rate 1.0 / 1h
2009-12-22 21:39:01 1NNI3w-0004wr-He <= [email protected] H=(157.44.115.124.broad.ya.sn.dynamic.163data.com.cn) [124.115.44.157] P=esmtp S=1656 [email protected]
2009-12-22 21:39:07 no IP address found for host adsl-dynamic-pool-xxx.fpt.vn (during SMTP connection from [118.71.241.121])
2009-12-22 21:39:13 H=mta21.charter.net [216.33.127.81] Warning: Sender rate 2.8 / 1h
2009-12-22 21:39:14 1NNI4A-0004xP-3l <= [email protected] H=mta21.charter.net [216.33.127.81] P=esmtp S=3694
2009-12-22 21:39:19 no host name found for IP address 200.7.224.18
2009-12-22 21:39:20 no host name found for IP address 95.56.29.12
2009-12-22 21:39:24 H=(user) [95.56.29.12] rejected MAIL <[email protected]>: Access denied - Invalid HELO name (See RFC2821 4.1.1.1)
2009-12-22 21:39:47 H=(XQDLIRTO) [200.7.224.18] rejected MAIL <[email protected]>: Access denied - Invalid HELO name (See RFC2821 4.1.1.1)
2009-12-22 21:39:48 H=cpe-121-215-230-27.static.qld.bigpond.net.au [121.215.230.27] Warning: Sender rate 0.0 / 1h
2009-12-22 21:39:48 1NNI4i-0004yd-3n <= [email protected] H=cpe-121-215-230-27.static.qld.bigpond.net.au [121.215.230.27] P=esmtp S=1724 [email protected]
2009-12-22 21:39:49 no IP address found for host 203.9.176.220.broad.gz.jx.dynamic.163data.com.cn (during SMTP connection from [220.176.9.203])

 

[jdearing]

I notice the MailScanner service is failed. I can manually start it, but it appears to fail almost immediately again.

 

[cPanelDon]

I notice the MailScanner service is failed. I can manually start it, but it appears to fail almost immediately again.

Please ensure the third-party software, MailScanner, is fully disabled, then proceed with the following reset:
WHM: Main >> Service Configuration >> Exim Configuration Editor >> Reset Configuration >> Reset All Configs to Defaults
Documentation: Reset the Exim Configuration

For in-depth assistance with MailScanner difficulty, I recommend referring to the vendor's official web site and their available support channels:
http://forum.configserver.com/
http://www.configserver.com/contact.html
http://www.configserver.com/support.html

 

[jdearing]

Reinstall of MailScanner seems to have solved the problem!

I had completely reset the exim configs to defaults earlier. That didn't help me. But MailScanner was probably still hosing things up.