sendmail, 4th Edition

$U

---

The UUCP name to override $k

mc configuration

When configuring with the mc configuration technique, you can include support for UUCP by using the MAILER(uucp) command (Section 4.2.2.2) in your mc file. With that support, you can override the use of $k ($k) with a hostname of your choosing when prefixing a string of hosts with the local hostname:

 here!lady!sonya!user   insert local hostname here  

If $U has a value, its value will be inserted. If it lacks a value, $k will be inserted.

$U can be useful when several hosts provide UUCP services. It can be defined in your DOMAIN( ) file (Section 4.2.2.3) as a single name so that all outgoing UUCP mail will appear as though it is from a common host.