Sendmail is a Mail Transfer Agent, which is the program that moves mail from one machine to another. Sendmail implements a general internetwork mail routing facility, featuring aliasing and forwarding, automatic routing to network gateways, and flexible configuration.

8.14.4

This version fixed a problem where some certificate authorities do not properly check the requests they are signing and hence allow spoofing via an embedded NUL in the CN entry…. A workaround for a Linux resolver problem has been added to avoid core dumps. A bug where the value of headers, e.g., Precedence, Content-Type, et.al., was not extracted correctly thus preventing them from being recognized properly was fixed. An erroneous reduction of the length limitation on a return path was fixed.

Detailed history and release notes are available at Freshmeat.net: http://freshmeat.net/projects/sendmail#release_310640