> -----Original Message----- > From: Dan Donathan > Sent: Friday, March 21, 2003 5:50 PM > Subject: RE: Sendmail Relay > > > Thanks for your reply. > > Yes. With MS Exchange you can set it up so that they can only relay if > they have "My Outgoing server requires authentication" and it matches > their server acct, but I can't figure out how to do that in > Sendmail. Is that what SMTP Auth is?
Yes! SMTP Auth is what you want to enable. I think the redhat supplied version of sendmail is already compiled for SMTP auth, you just need to enable this feature in your sendmail.mc file. 1) Uncommment the following lines in /etc/mail/sendmail.mc (remove the leadling dnl, not trailing)... TRUST_AUTH_MECH(`EXTERNAL DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl define(`confAUTH_MECHANISMS', `EXTERNAL GSSAPI DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl 2) Recreate your sendmail.cf file... # cd /etc/mail # cp sendmail.cf sendmail.cf.orig # m4 sendmail.mc >sendmail.cf 3) restart sendmail # /etc/init.d/sendmail restart 4) If the users that you want to allow relaying have local accounts on your sendmail box, then you can quickly test by changing /usr/lib/sasl/Sendmail.conf to... pwcheck_method: pam 5) Now test using an MUA that supports password authentication for outbound e-mails. Note: You will probably want to change the pwcheck_method back to sasldb to fully implement this feature. A good starting point for sasl would be the man pages for the following commands: saslpasswd and sasldblistusers Steve Cowles -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED] https://listman.redhat.com/mailman/listinfo/redhat-list
