[Dovecot] multiple authentication mechanisms, many problems

[Jani Karlsson]

Timo Sirainen wrote:
> On Sun, 2005-06-12 at 00:06 +0300, Jani Karlsson wrote:
> 
>>dovecot: Jun 11 23:57:56 Info: auth(default): 
>>pam(testi at irkkaa.net,83.145.196.129): pam_authenticate() failed: 
>>Authentication failure
> 
> ..
> 
>>passdb pam {
>>    args = *
>>   }
>>passdb sql {
>>    args = /usr/local/etc/dovecot-mysql.conf
>>   }
>>userdb passwd {
>>}
>>userdb sql {
>>    args = /usr/local/etc/dovecot-mysql.conf
>>}
> 
> 
> Did you try that it works with just SQL, or with just PAM? The problem
> happens only if these both are defined? When it gets stuck, does it
> matter if the user is in PAM or SQL?
> 
> Is this with 1.0-stable or 1.0-test?
> 
1.0-test, I found the error it had... authentication was successfull, 
but it was trying to request /Maildir, although I had %h:%h/Maildir
I was wanting /Maildir for shell (unix) users and homedir/[cur,new,tmp] 
for SQL-users. It tried to access 
/usr/local/virtual/test at test.net//Maildir/ and was stuck in some loop 
until that connection timed out. After I fixed this error, I found 
another, already posted on the list:

http://dovecot.org/pipermail/dovecot/2005-May/007421.html

similiar problems with Gentoo on AMD64, 1.0-test72.. cannot 
create/move/such IMAP folders.
Error:
denied resource overstep by requesting 17189568512 for RLIMIT_AS against 
limit 536870912 for /usr/local/libexec/dovecot/imap[imap:23732] 
uid/euid:1156/1156 gid/egid:1156/1156, parent 
/usr/local/sbin/dovecot[dovecot:13204] uid/euid:0/0 gid/egid:0/0

Yet there is no limits, checked that twice.

Also, dovecot starts only random, if it has to do something (like 
correct /var/run/dovecot permissions, it will always start), somehow it 
races too fast too many connections to MySQL, resulting:
dovecot: Jun 14 12:46:45 Error: Auth process died too early - shutting down
dovecot: Jun 14 12:46:45 Info: auth(default): mysql: Connected to (null) 
(postfix)
dovecot: Jun 14 12:46:45 Error: auth(default): 
net_connect_unix(/var/run/dovecot/auth-worker.11918) failed: No such 
file or directory
dovecot: Jun 14 12:46:45 Error: child 11918 (auth) returned error 89

I find it yet not quite suitable for production use, as I can duplicate 
these exact same errors on another 64-bit (AMD64) Debian system.
I am wondering if is this something related to 64-bit CPUs.
Anyway, patches etc are welcome. Specially the dovecot starting randomly 
only is nasty, need to kill all processes manually and try again.