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Old 05-11-2012, 07:40 PM   #1
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Registered: May 2012
Distribution: CentOS
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postfix sasl . no mechanism available

Trying to alter postfix so that I can relay email to

Error in /var/log/mailllog :-
... SASL authentication failed; cannot authenticate to server ... no mechanism available

have done:-
postmap sasl_passwd

in tried both:-
smtp_sasl_security_options = noanonymous and:-
smtp_sasl_security_options =

Postfix was installed as part of the server package. I didn't install it or any of its parts.

Setup guide from asked to add password/username to sasl_passwd, but there was no sasl_passwd file on the server. I created it in /etc/postfix

Nothing seems to make any difference. Still the same error. Any suggestions welcome.

Last edited by swanny99; 05-12-2012 at 10:03 AM. Reason: clarity
Old 05-12-2012, 11:01 AM   #2
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Registered: May 2012
Distribution: CentOS
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new error

after hours of trial with the same error, I am delighted to see a new error in /var/log/maillog:-

"unknown mail transport error"

The only thing I changed was [] round the relayhost:-
exactly the same in the sasl_passwd file.

Not sure if this is progress or not.

Any suggestions welcome.

After further reading, think relayhost should be []:2525 and password file does not require port.

Anyway, nothing works. Still same errors.

Last edited by swanny99; 05-12-2012 at 01:35 PM. Reason: correction
Old 05-12-2012, 06:48 PM   #3
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Registered: Apr 2012
Location: New York
Distribution: Centos,Debian
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Here you go this is for Centos

yum install cyrus-sasl-plain
Old 03-10-2015, 08:57 AM   #4
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Registered: Nov 2010
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For ubuntu (12.04 and probably 14.04) x64:

apt-get install libsasl2-modules


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