slow authentication

[Patrick Welche]

On a tiny test system with all of 8 users, I find that authentication
slows down quickly. Again the problem is where to look for the cause?
timsieved/sasl2/perl interface?

Here are a few timings - all with the same non-admin user:

** login via websieve.pl **
Sep  3 13:59:28 xxxxx timsieved[6217]: DIGEST-MD5 server step 1
Sep  3 13:59:33 xxxxx perl: DIGEST-MD5 client step 2
Sep  3 13:59:33 xxxxx timsieved[6217]: DIGEST-MD5 server step 2
Sep  3 13:59:33 xxxxx perl: DIGEST-MD5 client step 3
** logout and login via websieve.pl **
Sep  3 14:01:10 xxxxx timsieved[6228]: DIGEST-MD5 server step 1
Sep  3 14:01:54 xxxxx perl: DIGEST-MD5 client step 2
Sep  3 14:01:55 xxxxx timsieved[6228]: DIGEST-MD5 server step 2
Sep  3 14:01:55 xxxxx perl: DIGEST-MD5 client step 3
** logout and login via websieve.pl **
Sep  3 14:02:12 xxxxx timsieved[6230]: DIGEST-MD5 server step 1
** Where is step 2?
Sep  3 14:18:12 xxxxx timsieved[6241]: DIGEST-MD5 server step 1
Sep  3 14:20:11 xxxxx perl: DIGEST-MD5 client step 2
** imtest login
Sep  3 14:26:36 xxxxx imapd[6253]: DIGEST-MD5 server step 1
** imtest stuck at C: A01 AUTHENTICATE DIGEST-MD5
** 8 mins later, httpd times out? (gives Server error),
**     then imtest springs to life with no problems
Sep  3 14:34:27 xxxxx imtest: DIGEST-MD5 client step 2
Sep  3 14:34:36 xxxxx imtest: DIGEST-MD5 client step 2
Sep  3 14:34:36 xxxxx imapd[6253]: DIGEST-MD5 server step 2
Sep  3 14:34:36 xxxxx imtest: DIGEST-MD5 client step 3

There is no ldap involved anywhere.

How can I find out what is happening?

Cheers,

Patrick