SMTP Authentication with Sendmail 8.12.10
These notes cover compiling Sendmail 8.12.10 with support for SMTP AUTH on a FreeBSD 4.4-RELEASE #0 system using version 1.5.28 of the Cyrus SASL library. I wrote them for my own reference, but they're here in case they help someone else with the same or a similar setup.
In retrospect, I probably could have avoided extra work (making the symbolic link to /usr/local/lib/sasl and including the /usr/local/* directories when compiling sendmail) by compiling Cyrus SASL with --prefix=/usr. Someone try it and let me know...
Some similar guides:
Other helpful information :
Installing Cyrus SASL
- Download Cyrus SASL 1.5.28. (The 2.x libraries aren't officially supported under Sendmail 8.12.10.)
- Extract into /usr/local/src and follow the directions in INSTALL. make with the --enable-login option if you want to support the non-standard LOGIN mechanism used by Outlook. make with --disable-krb4 and/or --disable-gssapi if you don't need support for kerberos.
- ln -s /usr/local/lib/sasl /usr/lib/sasl
- Create /usr/local/lib/sasl/Sendmail.conf, which might look like this:
- Create some users using /usr/local/sbin/saslpasswd (if using sasldb to check passwords).
- Download sendmail 8.12.10.
- Extract into /usr/local/src.
- Add the following lines to devtools/Site/site.config.m4:
APPENDDEF(`confLIBDIRS', `-L/usr/local/lib -L/usr/local/lib/sasl')
- Add the following lines to cf/cf/sendmail.mc (you may want to include fewer or more mechanisms than those listed):
TRUST_AUTH_MECH(`DIGEST-MD5 CRAM-MD5 GSSAPI KERBEROS_V4')
define(`confAUTH_MECHANISMS', `DIGEST-MD5 CRAM-MD5 GSSAPI KERBEROS_V4')
- If you're including PLAIN or LOGIN as mechanisms, you should probably add:
- Complete any other configuration and ./Build
Test Before Installing
- ./obj.FreeBSD.4.4-RELEASE.i386/sendmail/sendmail -bs -Am -Ccf/cf/sendmail.cf -OLogLevel=13 and EHLO to test
- You should get a line like this (maybe with more or fewer mechanisms listed):
250-AUTH DIGEST-MD5 CRAM-MD5
Configuring Authentication for Your Users
Copyright 2003 Szarka Networks.
This work is licensed under a Creative Commons License.