Troubleshooting Course Content Rough Drafts-Identify And Resolve Mail Flow Issues: Difference between revisions
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==Section I - General Info== | ==Section I - General Info== | ||
Email traffic depends on DNS MX records | Email traffic depends on DNS MX records | ||
==Section II - Trouble with Incoming Messages== | ==Section II - Trouble with Incoming Messages== | ||
<strong>Why are my messages not getting delivered?</strong> | <strong>Why are my messages not getting delivered?</strong> | ||
Revision as of 18:06, 11 February 2015
ROUGH DRAFT
Introduction
Section I - General Info
Email traffic depends on DNS MX records
Section II - Trouble with Incoming Messages
Why are my messages not getting delivered? Check your DNS MX records from this linux command
host –t mx yourdomain.com
You should see something like…
yourdomain.com is handled by 10 mail.yourdomain.com.
Check to see if the MTA IP address is correct
host -t a mail.yourdomain.com
Is the IP correct?
Section III - Trouble with Outgoing Messages
Why are my messages not getting sent out? � Is your Network provider denying outbound smtp connections?
telnet smtp.hp.com 25
Section IV - Troubleshooting Tools
- /opt/zimbra/postfix/sbin/mailq
- /opt/zimbra/postfix/sbin/postqueue
- sudo /opt/zimbra/libexec/zmqstat
- /opt/zimbra/libexec/zmmsgtrace
Section V - Differences between zimbraMtaRelayHost & zimbraSmtpHostname
zimbraMtaRelayHost: Used by the zimbra MTA, postfix's value for postconf relayhost.
zimbraSmtpHostname: Used by the zimbra user store node not running MTA service.
