O'Reilly logo

Postfix: The Definitive Guide by Kyle D. Dent

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Name

unknown_client_reject_code

Possible values:

reply code

Default:

450

SMTP response code to send when a request is rejected due to the reject_unknown_client restriction.

Example:

unknown_client_reject_code = 450

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required