Sendmail 8.11.1 Release Notes

NOTE: Sendmail 8.11.1 depot will install the mailservs file will be in
/usr/newconfig/etc/rc.config.d. You need to manually move this
file to /etc/rc.config.d/ in order to use this feature.
The priorities for these flags are defined in the
/usr/newconfig/etc/rc.conig.d/mailservs file.
7. send_only
This option generates a sendmail.cf file without the ‘check_compat’ ruleset.
You can only send mail messages, but cannot receive them.
The SENDMAIL_SENDONLY flag in /etc/rc.config.d/mailservs file
must be set to ‘1’ in order to use ‘send_only’ feature.
• SMTP Authentication based on RFC 2554
This version of Sendmail supports SMTP AUTH as defined in RFC 2554 (SMTP
Service Extension for Authentication), which is based on SASL (Simple
Authentication and Security Layer - RFC 2222). SMTP authentication provides a
robust tool to control relaying with maximum flexibility.
The authentication protocol exchange consists of a series of server challenges
(otherwise known as a ready response) and client answers that are specific to the
authentication mechanism.
The AUTH parameter to the MAIL FROMcommand is set as:
MAIL FROM: from-addr AUTH=addr-spec
The addr-spec contains the identity that submitted the message to the delivery
system. If the server trusts the authenticated identity of the client to assert that the
message was originally submitted by the supplied addr-spec, then the server must
supply the same addr-spec in an AUTH parameter when relaying the message to
any server that supports the AUTH extension.
The list of authentication mechanisms for AUTH can be specified in the option,
AuthMechanisms in the sendmail.cf file. By default, it appears in the sendmail.cf
file as:
#O AuthMechanisms=GSSAPI KERBEROS_V4 DIGEST-MD5 CRAM-MD5
A new option to set AUTH parameter in MAIL FROMcommand has been added
in the sendmail.cf file. By default, this appears as:
#O AuthOptions
If this option is set to ‘A’, the AUTH= parameter for theMAIL FROM command will
be issued only when authentication succeeds.
New Features 13