2.6 Kernel and POP issues

Robert T. Covell rcovell at rolet.com
Sat Dec 2 14:24:24 EST 2006

Well it figures that I recomplied cyrus imap only and NOT sasl.  I will recompile that and put in the allowapop statement.  Report to follow...


From: Sebastian Hagedorn [mailto:Hagedorn at uni-koeln.de]
Sent: Sat 12/2/2006 12:20 PM
To: Robert T. Covell
Cc: info-cyrus at lists.andrew.cmu.edu
Subject: RE: 2.6 Kernel and POP issues

-- "Robert T. Covell" <rcovell at rolet.com> is rumored to have mumbled on 1.
Dezember 2006 18:50:11 -0600 regarding RE: 2.6 Kernel and POP issues:

> I have recompiled my cyrus implementation (--with-devrandom=/dev/urandom)
> and my kernel with no luck.
> I reboot from the newest 2.4 kernel and my pop clients hang.  When
> checking the 2.6 kernel I looked at /proc/sys/kernel/random/entropy_avail
> and saw that it very low (like 5-30, not sure on specifics).
> Is there something I am not doing right with either the kernel or cyrus?

Well, recompiling SASL *should've* taken care of that, but you could also
try disabling APOP in /etc/imapd.conf:

allowapop: 0

Restart Cyrus after you make the change. If that helps it means that, for
whatever reason, Cyrus still uses /dev/random instead of /dev/urandom ...
if it doesn't help, something else must be wrong. I have no idea what that
might be.
Sebastian Hagedorn - RZKR-R1 (Flachbau), Zi. 18, Robert-Koch-Str. 10
Zentrum für angewandte Informatik - Universitätsweiter Service RRZK
Universität zu Köln / Cologne University - Tel. +49-221-478-5587 

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