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sendmail Desktop Reference

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Configuring with m4
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4.5 Mailer Tables

Mailer tables are a simple way of directing messages to different Mail Delivery Agents (MDAs) on the basis of host or domain names. For example, consider this input file (e.g., /etc/mailertable ):

remote.foo.com  uucp-uudom:home
.skunkworks.foo.com   relay:secret.foo.com

Here the first line says that anything addressed to user@remote.foo.com should be sent using the uucp-uudom deilvery agent to the host named home . The second line says that any message addressed to any host within the domain .skunkworks.foo.com should be sent using the relay delivery agent to the host secret.foo.com .

You can build the database from the input file using the % makemap (1) program:


makemap hash 




You declare the database for use with your .mc file, like this:

FEATURE(mailertable, hash