Sendmail 8.11.1 Release Notes

1 New and Changed Features
Sendmail 8.11.1 is available on HP-UX 11.0 platform as a web upgrade. This version
offers various new features and enhancements that enable your mail system to handle
high volumes of mail with ease. It also offers new anti-spamming features, which
provide granular and finer control over existing functions implemented by Sendmail
and other agents. This version of Sendmail is a dual stack implementation of IPv4 and
IPv6.
IMPORTANT: Read Chapter 4: “Known Problems, Limitations, and Fixes” (page 27),
before installing Sendmail 8.11.1.
New Features
The following new features have been added in Sendmail 8.11.1:
IMPORTANT: The entries in the sendmail.cf file preceded by a ‘#’ (hash) are
commented by default.
• Multiple Queue Directories
This feature facilitates the parallel processing of mail by spreading process loads
across multiple disks, thereby improving queue performance, which is impacted
by the number of entries in the queue directories. Unix files take a long time to
open when number of entries in the directories exceed 1000.
NOTE: In order to use multiple directories, the QueueDirectory option in the
sendmail.cf file needs to be supplied with a value ending with *.
For example, in the configuration file, if you specify:
O QueueDirectory=/var/spool/mqueue/g*
All the directories or links to directories that begin with ‘g’ will be used. If there
are five directories, g1, g2, g3, g4, and g5, Sendmail will use all the five directories
when the Sendmail daemon is restarted. The mails are randomly assigned to the
queue directories. The queue directory structure should not be changed when
Sendmail is running.
Individual flushing of the mail queues can also be done by specifying the following
in command line:
sendmail -q -O QueueDirectory=/var/spool/mqueue/g1 sendmail
-q -O QueueDirectory=/var/spool/mqueue/g3
New Features 7