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Archive for December 8th, 2009

Sendmail: Relaying Denied: Proper Authentication Required

by z3n on Dec.08, 2009, under Linux Happyness, Tips & Hints

Problem:

You can receive emails with your own mail server, but can’t send to “non-local” domains.

Solution:

You need to setup auth method before sending emails outside the local realm. You can enable ecrypted passwords and such.

Change at sendmail config:

define(`confAUTH_OPTIONS’, `A’)dnl
TRUST_AUTH_MECH(`LOGIN PLAIN’)dnl
define(`confAUTH_MECHANISMS’, `LOGIN PLAIN’)dnl

at ssh:

set auth_options to `A’
service saslauthd restart
(don’t forget it’s importaint)
service sendmail restart

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