/usr/lib/aliases name format

[Dennis Bednar]

Our SV man page for aliases(4) says that the format is
name: name_1, name_2, name_3, ...

Most of the entries in our file are absolute uucp path names
such as nextmch!nextnextmch!lastmch!person.

However, is it okay to put in names such as
person at lastmch.uucp or person at lastmch.UUCP?

Or does the answer depend on how our sendmail configuration
file is defined (of which I know zilch about)?
-- 
Dennis Bednar	Computer Consoles Inc.	Reston VA	703-648-3300
{decvax,ihnp4,harpo,allegra}!seismo!rlgvax!dennis	UUCP