dovecot - Apr 2007 - Dovecot Assertion on mail server with POP3 and LDAP authentication

Running two Fedora 6 systems with all the latest updates as of a week 
ago.  One system is the mail server (sendmail, dovecot), the other is 
the master (open)LDAP server with the mail server running a slave LDAP 
instance.

The problem I'm having is the client pop3 users are frequently being 
told their passwords aren't correct by their email clients (Outlook, 
Eudora).  They try again, a couple times and eventually it works.  I've 
seen it on my own account and when I test their accounts, occasionally 
it just doesn't take the password.  I've only had this trouble since I 
implemented the LDAP authentication.

Checking through the server maillog, I see the following entry:

Apr  4 08:44:38 msi2 dovecot: auth(default): dovecot-auth: 
../../../libraries/liblber/io.c:491: ber_get_next: Assertion 
`ber->ber_buf == ((void *)0)' failed.
Apr  4 08:44:38 msi2 dovecot: auth(default): 
pam(secretuser,192.168.0.200): Child process died
Apr  4 08:44:38 msi2 dovecot: auth(default): PAM: Child 14564 died with 
signal 6
Apr  4 08:44:38 msi2 dovecot: pop3-login: Aborted login: 
user=<secretuser>, method=PLAIN, rip=192.168.0.200, lip=192.168.0.11


This seems to point out that dovecot is the problem, but again, I didn't 
have this trouble until I implemented the LDAP authentication.  So my 
question is, anyone know a solution?  If not, anyone got a suggestion of 
where I should look for more clues or support?  Or any suggestions at all?

Thanks for any help.


Following is the dovecot version and configuration

[root at msi2 ~]# dovecot --version
1.0.rc15
[root at msi2 ~]# dovecot -n
# /etc/dovecot.conf
protocols: pop3
listen:
login_dir: /var/run/dovecot/login
login_executable: /usr/libexec/dovecot/pop3-login
mail_executable: /usr/libexec/dovecot/pop3
mail_plugin_dir: /usr/lib/dovecot/pop3
pop3_client_workarounds: outlook-no-nuls oe-ns-eoh
auth default:
  passdb:
    driver: pam
  userdb:
    driver: passwd
[root at msi2 ~]#

On 10.4.2007, at 19.48, Tim Alberts wrote:
> Apr  4 08:44:38 msi2 dovecot: auth(default): dovecot-auth: ../../../ 
> libraries/liblber/io.c:491: ber_get_next: Assertion `ber->ber_buf  
> == ((void *)0)' failed.
> Apr  4 08:44:38 msi2 dovecot: auth(default): pam(secretuser, 
> 192.168.0.200): Child process died
..
>  passdb:
>    driver: pam
>  userdb:
>    driver: passwd
So you're using pam_ldap and nss_ldap. See http://wiki.dovecot.org/ 
AuthDatabase/Passwd

So I'd suggest upgrading.

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Timo Sirainen wrote:
> On 10.4.2007, at 19.48, Tim Alberts wrote:
>
>> Apr  4 08:44:38 msi2 dovecot: auth(default): dovecot-auth: 
>> ../../../libraries/liblber/io.c:491: ber_get_next: Assertion 
>> `ber->ber_buf == ((void *)0)' failed.
>> Apr  4 08:44:38 msi2 dovecot: auth(default): 
>> pam(secretuser,192.168.0.200): Child process died
> ..
>>  passdb:
>>    driver: pam
>>  userdb:
>>    driver: passwd
>
> So you're using pam_ldap and nss_ldap. See 
> http://wiki.dovecot.org/AuthDatabase/Passwd
>
> So I'd suggest upgrading.
>
Thank you for the quick response.  It doesn't look like the problem I'm 
having though?  I don't have problems with people getting other peoples 
email.  I have problems with the Assertion errors that I mentioned.

I do see that Fedora has updated packages available for Fedora so I'll 
upgrade and see what happens.