Hi List, We are trying to configure a mail server on RHEL 4.4 using Postfix 2.2.10-1.RHEL4.2,Courier-imap-4.1.3-1.3ES,courier-authlib-0.59.3-10.rh3ES, maildrop2.0.3, cyrus-sasl-2.1.19-5.EL4. We intend to put all the user information in Microsoft Active Directory (ver:-5.2.3790.3959 Windows server 2003 R2). We have enabled NIS and can store Unix related attributes like home directory etc. in the AD. So far we have been able to push mail using telnet and that mail is also getting delivered to the respective mailbox whose information is present in the active directory. This indicates that we can successfully query active directory using openldap client. We have also tested a mail account using outlook express and that successfully fetches mails from the server. The only issue is with the SASL authentication. We have searched in the internet and found few articles where kerberos has been advised to use for encryption. We have followed the directions there to configure the Linux box. The command [root@mail ~]# kinit bonhi.sengupta Produces the result Password for bonhi.sengupta@xxxxxxxxxxx <mailto:bonhi.sengupta@xxxxxxxxxxx>: [root@mail ~]# We are not trying to implement SSL to communicate with the AD for SASL authentication. Is it a must? But when are checking the sasl authentication using the following command:- testsaslauthd -u bonhi.sengupta -p cescnet_123 0: NO "authentication failed" We are getting the above error. The /var/log/messages for the above testing is as follows :- Apr 30 20:46:27 mail saslauthd[15653]: do_auth : auth failure: [user=bonhi.sengupta] [service=imap] [realm=] [mech=ldap] [reason=Unknown] the /etc/saslauthd file reads as follows: [root@mail ~]# cat /etc/saslauthd.conf # /etc/saslauthd.conf #servers: ldap://127.0.0.1/ servers: ldap://10.50.81.250/ ldap_auth_method: fastbind ldap_search_base: cn:users,dc=tibs,dc=edu,dc=in #ldap_filter: (|(uid=%u)(uid=%U)) ldap_filter: uid=%u ldap_timeout: 20 ldap_ssl: no ldap_start_tls: no ldap_debug: 255 May we request you to kindly give some pointer? With regards, Goutam
