[Dovecot] Why is dovecot involved in my smtp process

Steve Campbell campbell at cnpapers.com
Thu Feb 23 17:47:40 EET 2012

On 2/23/2012 10:30 AM, Adam Szpakowski wrote:
> On 23.02.2012 16:16, Steve Campbell wrote:
>> I've been trying to get smtp auth set up for days. All my sendmail 
>> and sasl2 stuff seems to be proper, but the user can't use the system 
>> on port 587, which is where I require authorization.
>> Now I see where messages are in my maillog of the type:
>> auth: pam_unix(dovecot:auth) : authentication failure ........
>> Why is dovecot involved in my smtp processes and how do I fix this. 
>> I've got some very mad users. The 10-auth.conf file is pretty much 
>> stock except for allowing plain text logins.
> Dovecot can be used as authentication source. It has its own 
> implementation of SASL library which can be used instead of Cyrus SASL 
> implementation.
> In Dovecot2 the config for auth is in 10-master.conf, service "auth".
> Please see:
> for dovecot 1.x: http://wiki.dovecot.org/Sasl
> for dovecot 2.x: http://wiki2.dovecot.org/Sasl
> on the postfix side: 
> http://www.postfix.org/SASL_README.html#server_dovecot
That's all great, but what about sendmail. What should my pam.d/dovecot 
file look like, what should my dovecot.conf file look like, all this 
just runs me around in circles.

Thanks for the pointers, but I've been over that a million times and 
nothing seems to work.


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