The inline_smtp Perl script was created to allow filtering of incoming mail on a separate server that houses the mailspools without running a full-blown MTA. While it's possible to configure another MTA, e.g. postfix, to relay all mail to a smart host and do filtering through postfix, the queue can get behind easily, and on a busy host thousands of messages can get queued in a few hours causing delays in delivery from a few minutes to several hours. By filtering while redirecting, mail arrives without any delays, and can be filtered by a seperate host adding headers or content reducing the load on the final mail host.
|Tags||Communications Email Mail Transport Agents Filters|
|Operating Systems||OS Independent|
Release Notes: "Received from" header injection now happens after passing through the filter, because spamc would change these headers.
Release Notes: Bugs regarding some deadlock conditions were fixed. All communications now happen with a timeout so that extremely slow mail servers don't eat all available sockets and fill the TCP queue, allowing the server to recover quicker.
No changes have been submitted for this release.