Yes, I've got sendmail setup (8.12.X) to use SASL for authentication.
Works quite well.

The RunAsUser needs to have read access on the sasldb.

you might need a /usr/lib/sasl/smtpd.conf with:
pwcheck_method: sasldb

Check out this sendmail.net link for a good sendmail debugging:
http://sendmail.net/usingsmtpauth.shtml

Elfin

On Wed, 28 Aug 2002, Stephen M. Jones wrote:

> Date: Wed, 28 Aug 2002 12:09:54 -0500 (CDT)
> From: Stephen M. Jones <smj@cirr.com>
> To: tech-net@netbsd.org
> Subject: SMTP AUTH (sendmail sasl) LDAP?
>
> Hi .. Has anyone has any luck getting this setup?
>
> * built & installed cyrus-sasl
> * build & installed sendmail with USE_SASL (-DSASL)
> * defined an authfile in sendmail.cf
> * setup authfile with a test acct.
> * ran sendmail -bd -q30m, connected to 25 and did an 'ehlo'
>   250 AUTH CRAM-MD5 PLAIN
>
> I've tried using a few 'mail' clients that support SMTP AUTH and have
> had no luck.
>
> Another way to do this is with LDAP, correct?  I also need to share a
> password and group file between other machines .. what are the other
> solutions?
>
>