503: HELO must be first command in session

Severity

Warning.

Explanation

A valid HELO command was already issued, or a MAIL FROM command or RCPT TO command was issued before a HELO command.

System action

The command is ignored. SMTP continues.

System programmer response

Check that your SMTP commands are sent in the correct order.

Module

SMTPCMDS

Destination

DoMail