Date: Sat, 22 Sep 2007 19:26:44 +0100 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: "Michael W. Lucas" <mwlucas@blackhelicopters.org> Cc: freebsd-isp@freebsd.org Subject: Re: SMTP AUTH over SSL only? Message-ID: <46F55E64.8080604@infracaninophile.co.uk> In-Reply-To: <20070922174425.GA37518@bewilderbeast.blackhelicopters.org> References: <20070922174425.GA37518@bewilderbeast.blackhelicopters.org>
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Michael W. Lucas wrote:
> Hi folks,
>
> I have a FreeBSD 7.0 server where I'd like to authenticate against
> /etc/master.passwd when using SMTP AUTH and Sendmail. This means
> using LOGIN, which can use either plain text or SSL-tunneled
> connections. I'd like to allow SMTP AUTH only over SSL, and disallow
> it over unencrypted connections. Any suggestions on this? Surely
> there's just some switch I'm missing? The archives and search engines
> are full of people trying to get SSL working, not people trying to
> turn off non-SSL connections.
>
> Here's the relevant snippets of sendmail.mc I'm using.
>
> TRUST_AUTH_MECH(`GSSAPI DIGEST-MD5 CRAM-MD5 LOGIN')dnl
> define(`confAUTH_MECHANISMS', `GSSAPI DIGEST-MD5 CRAM-MD5 LOGIN')dnl
> define(`CERT_DIR', `/usr/local/etc/certs')dnl
> define(`confCACERT_PATH', `CERT_DIR')dnl
> define(`confCACERT', `CERT_DIR/hostname.pem')dnl
> define(`confSERVER_CERT', `CERT_DIR/hostname.pem')dnl
> define(`confSERVER_KEY', `CERT_DIR/hostname-key.pem')dnl
> define(`confCLIENT_CERT', `CERT_DIR/hostname.pem')dnl
> define(`confCLIENT_KEY', `CERT_DIR/hostname-key.pem')dnl
> DAEMON_OPTIONS(`Port=smtp, Name=MTA')dnl
> DAEMON_OPTIONS(`Port=smtps, Name=TLSMTA, M=s')dnl
>
> Any suggestions greatly appreciated!
Add this to your /etc/mail/`hostname`.mc:
define(`confAUTH_OPTIONS', `p,y')dnl
See /usr/share/doc/smm/08.sendmailop/paper.ascii.gz for details
- -- search for the section on AuthOptions..
Cheers,
Matthew
- --
Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard
Flat 3
PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate
Kent, CT11 9PW
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