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+dnl
+dnl *** EXAMPLE *** sendmail.mc file for a Mailman list server using
+dnl mm-handler to deal with list operations (in place of aliases).
+dnl This is what I actually use on my site.
+dnl
+dnl $Id: mailman.mc 4287 2001-10-27 02:30:51Z bwarsaw $
+dnl
+
+
+dnl
+dnl First you need to define your general characteristics.  You
+dnl should know what these settings should be at your site -- I
+dnl only know what they should be at mine.
+dnl
+OSTYPE(solaris2)dnl
+DOMAIN(generic)dnl
+
+dnl
+dnl You can keep the old alias files for back-compatibility, but it's
+dnl probably better not to as this can become a point of confusion
+dnl later.
+dnl
+define(`ALIAS_FILE', `/etc/mail/aliases,/etc/mail/lists')
+
+dnl
+dnl I use procmail for local delivery, because it's smart to have a
+dnl local delivery mailer, even if you don't (ordinarily) do any local
+dnl delivery. The Solaris local delivery mailer is part of its sendmail
+dnl package. I pkgrmed the sendmail packages so that system upgrades
+dnl don't kill my sendmail.com sendmail, so mail.local is unavailable,
+dnl so I throw procmail in here even though it never gets used.
+dnl
+define(`PROCMAIL_MAILER_PATH', `/opt/bin/procmail')
+FEATURE(`local_procmail')
+MAILER(`local')
+
+dnl
+dnl Miscellaneous tuning.  Not relevant to Mailman.
+dnl
+define(`confCONNECTION_RATE_THROTTLE', 5)
+define(`confMAX_MESSAGE_SIZE', `5000000')
+define(`confNO_RCPT_ACTION', `add-to-undisclosed')
+define(`confME_TOO', `True')
+define(`confDOUBLE_BOUNCE_ADDRESS', `mailer-daemon')
+
+dnl
+dnl Privacy options.  Also not relevant.
+dnl
+define(`confPRIVACY_FLAGS', `authwarnings,needvrfyhelo,noexpn,noreceipts,restrictmailq')
+
+
+dnl
+dnl Mm-handler works by mailertabling all addresses on your list
+dnl server hostname(s) through the mm-handler mailer. Mailertable
+dnl maps mail domains to mailer types. I want a mailertable to map
+dnl listtest.uchicago.edu to the mm-handler mailer, but we need to
+dnl specifically request this functionality in the .mc file.
+dnl
+FEATURE(`mailertable', `hash -o /etc/mail/mailertable')
+
+dnl
+dnl This leads to an immediate and important side-effect: "local"
+dnl addresses, and notably RFC-specified addresses such as postmaster,
+dnl are assumed by sendmail to be lists! Since aliases are not processed
+dnl for domaintabled domains, we must use a virtusertable to reroute
+dnl such addresses.
+dnl
+FEATURE(`virtusertable', `hash -o /etc/mail/virtusertable')
+
+dnl
+dnl By default, sendmail applies virtusertable mapping, if at all, for
+dnl all interfaces for which it accepts mail -- i.e., all domains in
+dnl $=w. Mm-handler relies on your having a single domain (hostname)
+dnl that serves only lists, with no users. To avoid potential namespace
+dnl conflicts, you need not to have this list domain included in $=w.
+dnl As a result, virtuser mapping does not apply for the Mailman
+dnl list domain. However, you can pre-empt this rule by defining
+dnl $={VirtHost}: if there are domains in this class, they will be
+dnl mapped before $=w is mapped.
+dnl
+dnl VIRTUSER_DOMAIN() defines this class.
+dnl
+VIRTUSER_DOMAIN(`nospam.uchicago.edu listtest.uchicago.edu listhost.uchicago.edu')
+
+dnl
+dnl On a related point: by default, Sendmail probes for open IP
+dnl interfaces, and adds their hostnames to $=w. Although Sendmail does
+dnl virtusertable mapping for members of $=w, it doesn't do mailertable
+dnl mapping for them, because they're considered "local". This tells
+dnl Sendmail not to probe interfaces for local hosts, and it's critical
+dnl if your Mailman domain is actually an IP address (with an A record,
+dnl not just CNAME or MX) on your server.
+dnl
+define(`confDONT_PROBE_INTERFACES', `True')
+
+
+dnl
+dnl Even though my actual hostname is foobar, tell the world that I'm
+dnl listtest.uchicago.edu.
+dnl
+FEATURE(`limited_masquerade')
+MASQUERADE_AS(`listtest.uchicago.edu')
+
+
+dnl
+dnl Access control is a useful feature for blocking abusers and relays
+dnl and such.
+dnl
+FEATURE(`access_db')
+
+
+dnl
+dnl This allows you to block access for individual recipents through
+dnl the same access database as is used for blocking sender hosts and
+dnl addresses.
+dnl
+FEATURE(`blacklist_recipients')
+
+
+dnl
+dnl Other local mailers...
+dnl
+MAILER(`smtp')
+MAILER(`procmail')
+
+
+dnl
+dnl Our Mailman-specific local mailer.
+dnl
+MAILER_DEFINITIONS
+####################################
+###   New Mailer specifications  ###
+####################################
+
+## Special flags! See
+##	http://www.sendmail.org/~ca/email/doc8.10/op-sh-5.html#sh-5.4
+## Note especially the absence of the "m" and "n" flags. THIS IS
+## IMPORTANT: mm-handler assumes this behavior to avoid having to know
+## too much about address parsing and other RFC-2822 mail details.
+
+Mmailman,	P=/etc/mail/mm-handler, F=rDFMhlqSu, U=mailman:other,
+		S=EnvFromL, R=EnvToL/HdrToL,
+		A=mm-handler $h $u