On my CentOS box, it's in lib64:
Code:
[root@localhost ~]# uname -r
2.6.18-194.32.1.el5
[root@localhost ~]# locate Sendmail.conf
/usr/lib64/sasl2/Sendmail.conf
[root@localhost ~]# cat /usr/lib64/sasl2/Sendmail.conf
pwcheck_method:saslauthd
You might need "pwcheck_method: PAM" in yours, and an auth mechanisms line, as well, like
Code:
mech_list: DIGEST-MD5 CRAM-MD5 PLAIN LOGIN