Postfix: The Definitive Guide by Kyle D. Dent
Author:Kyle D. Dent [Kyle D. Dent]
Language: eng
Format: epub, pdf
Tags: COMPUTERS / System Administration / Email Administration
ISBN: 9780596103514
Publisher: O'Reilly Media
Published: 2009-06-29T16:00:00+00:00
HELO greatdeals.example.com
Postfix first encounters the check_helo_access rule pointing to the helo_access lookup table. In checking the lookup table, it finds an entry for greatdeals.example.com with an action of REJECT. Postfix, therefore, rejects the message.
HELO oreillynet.com
Postfix first encounters the check_helo_access rule pointing to the helo_access lookup table. In checking the lookup table, it finds an entry for http://oreillynet.com with an action of OK. Postfix stops processing for the smtpd_helo_restrictions parameter without considering any of the other restrictions and moves on to smtpd_sender_restrictions if specified.
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