7.194. sendmail

Updated sendmail packages that fix several bugs are now available for Red Hat Enterprise Linux 6.
Sendmail is a Mail Transport Agent (MTA) used to send mail between machines.

Bug Fixes

BZ#640234
Previously, the sendmail macro MAXHOSTNAMELEN allowed only 63 characters for the host name length. However, in some cases, it was used against the length of a fully-qualified domain name (FQDN), which has a maximum length of 255 characters. Consequently, FQDN resolution did not work correctly in some cases. To fix this bug, MAXHOSTNAMELEN now allows a maximum of 255 characters.
BZ#837007
The sendmail queue runner could previously terminate unexpectedly under certain circumstances. Consequently, sendmail stopped processing the mail queue. This update introduces a fix that prevents the source code from triggering an assertion in the OpenLDAP code when the connection to an LDAP server is lost while making a query. As a result, the assertion no longer causes the queue runner to terminate, and sendmail continues processing the mail queue as expected.
BZ#845821
Under certain circumstances, sendmail previously recorded a very large number of log messages that reported failures to set the close-on-exec flag. The Milter implementation has been modified to perform socket validation before the fnctl() function attempts to set close-on-exec. As a result, fnctl() is no longer called on invalid sockets, and the described log messages no longer occur.
BZ#890227
Prior to this update, the ldap_routing feature did not work as expected. If ldap_routing was used, sendmail reported the "-T<TMPF>" option missing, and the user was required to insert "-T<TMPF>" manually. With this update, the macro for generating configuration for ldap_routing has been fixed, and the user is no longer required to add "-T<TMPF>" manually when using ldap_routing.
BZ#1106852
Previously, the "{client_port}" value could not be used on little-endian machines, for example in mail filters, because it was set incorrectly. This update corrects the "{client_port}" value on little-endian machines.
Users of sendmail are advised to upgrade to these updated packages, which fix these bugs.