\pard\tx1152\tx2304\tx3456\tx4608\tx5760\tx6912\tx8064\tx9216\tx10368\tx11520\f0\b0\i0\ul0\fs28 UUCP major relay\
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Q: How do I specify that mail to an unknown domain, host, or user should be forwarded, using UUCP, to a specific other machine?\
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A: Only two minor changes are needed in the sendmail.cf file in order to set this up.\
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Change\
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# major relay mailer\
DMether\
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to\
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# major relay mailer\
DMuucp\
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This specifies uucp as the “major relay mailer” medium rather than the default of the ethernet. (The D indicates a macro definition; M is the name of the macro, and uucp is the value of the M macro.)\
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Also change\
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# major relay host\
DRmailhost\
CRmailhost\
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to\
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# major relay host\
DRuucpserver\
CRuucpserver\
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where uucpserver is the name of the machine that will forward mail to the unknown hosts. (Here, we define a macro [D] called R, and also define a class [C] called R. The values of the macro and of the class happen to be the same [uucpserver]; the name spaces of macros and of classes are separate.)\