Public bug reported:

In Ubuntu 6.06 (Dapper) a new upgrade has been released that upgrades
the openssl package and the corresponding libssl0.9.8 library:

Preparing to replace libssl0.9.8 0.9.8a-7ubuntu0.7 (using 
.../libssl0.9.8_0.9.8a-7ubuntu0.9_amd64.deb) ...
Unpacking replacement libssl0.9.8 ...
Preparing to replace openssl 0.9.8a-7ubuntu0.7 (using 
.../openssl_0.9.8a-7ubuntu0.9_amd64.deb) ...
Unpacking replacement openssl ...

This upgrade makes the SASL authentication (for postfix) unusable, and
so a whole postfix SMTP installation using that. That is a VERY serious
problem. (Downgrading the two packages can be a temporary fix.)

The following "auth.log" segment shows the details of the problem:

Jun 30 12:49:28 mester saslauthd[22542]: PAM unable to 
dlopen(/lib/security/pam_pgsql.so)
Jun 30 12:49:28 mester saslauthd[22542]: PAM [dlerror: 
/usr/lib/libssl.so.0.9.8: symbol pqueue_size, version OPENSSL_0.9.8 not defined 
in file libcrypto.so.0.9.8 with link time reference]
Jun 30 12:49:28 mester saslauthd[22542]: PAM adding faulty module: 
/lib/security/pam_pgsql.so
Jun 30 12:49:28 mester saslauthd[22542]: DEBUG: auth_pam: pam_authenticate 
failed: Module is unknown
Jun 30 12:49:28 mester saslauthd[22542]: do_auth         : auth failure: 
[user=************] [service=smtp] [realm=nir.hu] [mech=pam] [reason=PAM auth 
error]

** Affects: openssl (Ubuntu)
     Importance: Undecided
         Status: New

-- 
openssl upgrade makes sasl unusable
https://bugs.launchpad.net/bugs/393817
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