This document is intended as a guide for users and
administrators who are concerned about the sendmail-related issues they may
encounter when migrating from older releases of Solaris to Solaris 9.
Section 4 of the page titled
Differences between Sun and Berkeley versions of
sendmail explains in detail the semantics and syntax for V1/Sun sendmail
configuration files. As of Solaris 9, these are no longer supported. This
means that the syntax will not be accepted, which may cause sendmail to exit
with an error if run with a V1/Sun configuration file, and the semantic changes
will disappear; i.e., the behavior will revert to that of Berkeley sendmail.
There are two other sets of features which are no longer supported in Solaris
9's version of sendmail: remote mode, and the Sun reverse alias features.
- Remote Mode
- The remote mode feature was used to route and address mail via a mail
server from which
/var/mail was remotely mounted via NFS.
This was non-standard, however: there is no logical relationship between
where /var/mail is mounted from and either where mail should be routed to
or how mail should be addressed. This feature is no longer supported as
of Solaris 9. For routing, the
SMART_HOST
feature, documented on our Masquerading
and Relaying page, which is already enabled in the Solaris subsidiary
configuration file, takes care of this by default.
Regarding addressing: remote mode, when in use, set the sender's address to
that of the remote mail server. With the removal of remote mode, the default
subsidiary configuration file will, as of Solaris 9, use the client host's
name just like the main configuration file does. Users who would prefer to
use a different host name may wish to study our
Masquerading and Relaying page.
Here is a primer on how to change the default configuration to use
masquerading:
cd /usr/lib/mail/cf
cp subsidiary.mc myhost.mc
- Edit myhost.mc: add the line
MASQUERADE_AS(`foo')
after the DOMAIN line but before the MAILER lines,
where foo is the host name you would like outbound mail messages
to have. Note that $m is the macro for the local domain name,
which is a common masquerade value. (Note: see our
Sun migration page for some
gotchas with fully-qualified host names and the domain portion thereof.)
/usr/ccs/bin/make myhost.cf
cp myhost.cf /etc/mail/sendmail.cf
/etc/init.d/sendmail restart
- Sun Reverse Alias features
- There were three Sun-specific features for reverse-aliasing which were
never documented:
FEATURE(`sun_reverse_alias_files')
FEATURE(`sun_reverse_alias_nis')
FEATURE(`sun_reverse_alias_nisplus')
These features were proprietary, and are no longer supported as of
Solaris 9. The preferred method for reverse-aliasing is the genericstable
feature, documented in our Configuration
Features page and in our Virtual
Hosting page.
