"lost connection with xxxx.com[123.123.123.123] while sending end of data -- message may be sent more than once” in /var/log/message

Solution Verified - Updated -

Issue

  • Mail is deferred with below messages:
postfix/smtp: lost connection with xxxx.com[123.123.123.123] while sending end of data -- message may be sent more than once
  • After retries, the deferred mail can be sent successfully.

Environment

  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Postfix

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.

Current Customers and Partners

Log in for full access

Log In