Required Symbolic Names

Only the local delivery agent is required,[269] so if that required definition is missing, sendmail prints the following warning message but continues to run:

No local mailer defined.

[269] * Prior to V8 sendmail, both local and prog were required.

Get sendmail, 4th Edition now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.

Start your free trial