On 19.2.2013, at 15.48, Gábor Lénárt lgb@lgb.hu wrote:

Hi,

I have more postfix smtpd instances (via master.cf) listening on different ports, and the FW passes the inbound mail submit connections to the right port. The problem: it seems postfix is not able to append "default realm" and I need to set different values for the instances. As far as I see, it's not possible as postfix only passes the base64 encoded string from the user to the dovecot auth service (as I'm using dovecot for sasl authentication). We're talking about PLAIN and LOGIN methods.

In the other hand, dovecot is happily append "realm" with auth_default_realm. It works (which does not with postfix) but again: I need more defaults. I wouldn't like to run multiple instances of dovecot (just for having a single setting be different), so I've tried similar solutions:

service auth { unix_listener /var/spool/postfix/private/auth-dom1 { group = postfix mode = 0660 user = postfix } auth_default_realm = domain1.com }

And the same for /var/spool/postfix/private/auth-dom2 with domain2.com.

I thought then I could use postfix's master.cf to give different auth socket (like /var/spool/postfix/private/auth-dom1 and auth-dom2) with smtpd_sasl_path postfix parameter.

However it seems dovecot finds auth_default_realm invalid unless it's used in the global scope of the configuration.

It's dovecot 2.0.19 (in Ubuntu 12.04 LTS).

Is it possible at all, what I would like to do? Maybe with newer dovecot, or can you suggest me some other solution?

Best you can do now is to run two Dovecot instances with different configs.