Sendmail 8.11.1 Release Notes

NOTE: For more information on MSA, refer to “Spam Control using Message
Submission Agent” section below.
The fields currently supported by Sendmail for DaemonPortOptions are:
1. Family = inet, inet6
2. Address = IP address or hostname
3. Port = Port number/name
4. Listen = Listen queue size
5. M(Modifiers - Flags) = The flags are listed below:
a - necessitate authentication
b - bind to interface through which mail has been received
c - perform hostname canonification on the message
f - necessitate fully qualified hostname
h - use the interface name for the outgoing HELO command
C - do not perform hostname canonification on the message
E - do not allow ETRN
u - disable fully qualified address for From: address
6. SendBufSize = Send buffer size
7. RcvBufSize = Receive buffer size
8. Name = Name of the agent(MTA or MSA)
The default value in the sendmail.cf file is: M=E for MSA.
• ClientPortOptions
This option is similar to the DaemonPortOptions but is meant only for outgoing
connections.
The steps to set this option are same as those for the DaemonPortOptions except
that the option name ClientPortOptions should be specified instead of
DaemonPortOptions.
By default, it appears in the sendmail.cf file as:
#O ClientPortOptions=Address=0.0.0.0
• IPv6 Support
A new option value ‘inet6’ for the field “Family” in DaemonPortOptions to
enable IPv6 functionality has been added.
To enable IPv6, set the DaemonPortOptions in the sendmail.cf configuration
file as:
O DaemonPortOptions=Port=smtp, Name=MTA, Family=inet6O
DaemonPortOptions=Port=587, Name=MTA, M=E, Family=inet6
This will accept both IPv4 and IPv6 addresses.
New Features 9