[Dovecot] Timeouts connecting via POP3

[Don O'Neil]

Nope, not running nss_ldap... All of my users are virtual ones, so I've
re-organized like you suggested.

Once I get the directions from the DA folks on updating I'll try the
dovecot-auth blocking option if I still have the hanging. 

-----Original Message-----
From: dovecot-bounces at dovecot.org [mailto:dovecot-bounces at dovecot.org] On
Behalf Of Timo Sirainen
Sent: Wednesday, March 21, 2007 6:38 PM
To: Don O'Neil
Cc: 'Dovecot Mailing List'
Subject: Re: [Dovecot] Timeouts connecting via POP3

On Wed, 2007-03-21 at 18:00 -0700, Don O'Neil wrote:

> auth default:
>   username_chars:
> abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@&
>   count: 5
>   passdb:
>     driver: passwd
>   passdb:
>     driver: passwd-file
>     args: /etc/virtual/%d/passwd
>   userdb:
>     driver: passwd
>   userdb:
>     driver: passwd-file
>     args: /etc/virtual/%d/passwd

Where does passwd find the users? Are you using nss_ldap or something?
Maybe the hangs are related to it? With newer Dovecot versions you can use
blocking=yes setting, which does the passwd lookups in separate dovecot-auth
worker processes, and if they use up all the processes it logs an error and
returns "Internal error" to client instead of hanging.

Also if you have more virtual users than NSS users, it's faster to put the
passwd-file passdb/userdb before the passwd, so that that the passwd-file
lookups are done first.