Other Changes and Features of Interest

The following list describes other changes and features of interest.

• As noted in RFC 2476, sendmail now listens for submissions on port 587.

• As was noted in the Release Notes that are part of the sendmail distribution at ftp://ftp.sendmail.org, the XUSR SMTP command is deprecated. Mail user agents should begin using RFC 2476 Message Submission for initial user message submission.

• The Content-Length: header is no longer provided in messages that are piped to programs with any version of the Sun configuration files. However, this header is still provided for appended messages and ordinary mailbox deliveries that use any version of the Sun configuration files.

• sendmail now accepts connections when disk space is low, but in such situations it allows only ETRN commands.

• Entries in the alias file can be continued by putting a backslash directly before the new line.

• The timeout for sending a message by way of SMTP has been changed to check for delivery progress every five minutes. This change detects an inability to send information more quickly and reduces the number of processes that are waiting to time out.

• You can now copy the contents of a class to another class by using the syntax of the following example.

  C{Dest} $={Source}

  In the preceding example, all items in class $={Source} are copied into class $={Dest}.

• The maps are no longer optional by default. Also, if a problem occurs with a map, you receive an error message.

• Canonification is no longer attempted for any host or domain in class P ($=P).

• The = equate is not included in an option expansion if no value is associated with the option.

• Route addresses are stripped. For example, <@a,@b,@c:user@d> is converted to <user@d>.