Cyrus saslauthd PAM authentication Issue

[Simon Matter]

> I am experiencing a Cyrus-SASL and PAM authentication issue here:
>
> I have configured a Cyrus-IMAP Server to use saslauthd for authentication.
> The system is a RHEL4 Update 3 64bit and runs the RPM package comes with
> Redhat. The Cyrus-SASL version is 2.1.19, Cyrus-IMAP version is 2.2.12-3.
>
> Here is my /etc/imapd.conf:
>
> configdirectory: /imapconfig
> partition-default: /imapstore/imap01
> partition-1: /imapstore/imap01
> partition-2: /imapstore/imap02
> defaultpartition: default
>
> admins: cyrus_admin cyrus_murder
> sievedir: /imapconfig/sieve
> sendmail: /usr/sbin/sendmail
>
> hashimapspool: true
> sasl_pwcheck_method: saslauthd
> sasl_mech_list: plain
>
> When I do a:
> $ imtest -u username -a username localhost
>
> This is what I see in the /var/log/messages Log:
>
> saslauthd[6586]: PAM unable to dlopen(/lib/security/pam_stack.so)
> saslauthd[6586]: PAM [dlerror: /lib/security/pam_stack.so: cannot open
> shared object file: No such file or directory]
> saslauthd[6586]: PAM adding faulty module: /lib/security/pam_stack.so
> saslauthd[6586]: do_auth: auth failure: [user=username] [service=imap]
> [realm=] [mech=pam] [reason=PAM auth error]
>
> I checked and there is a /lib/security/pam_stack.so on the server. The
> rest of PAM authentication process is working correctly as it should be.
>
> Also the server has both /lib/security/pam_stack.so and
> /lib64/security/pam_stack.so. Will that be problem when the 64bit sasl
> library tries to use 32bit pam library?
>
> I am confused. I am hoping someone can give me some advice.

Hi,

1) The whole x86_64 thing is a mess, but that seems to be normal in the PC
world since the old 80286 days (no wait, it has already started with the
8086/8088 cpus).
2) I'm quite sure we need the following files to help in any way:

/etc/sysconfig/saslauthd
/etc/pam.d/imap

Regards,
Simon