Name
-d34.1
Synopsis
When sendmail bounces a mail message, it needs
to create headers that probably didn’t exist before.
It uses the putheader( ) routine to create them.
The -d34.1 (a.k.a. -d34)
debugging switch causes sendmail to print the
following on entry to that routine:
--- putheader, mailer = agent—-
Here, agent is the symbolic name of the delivery agent that will deliver the bounced message.
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