16 lines
952 B
Plaintext
16 lines
952 B
Plaintext
extsmail enables the robust sending of e-mail to external commands. In
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effect extsmail masquerades as the standard UNIX sendmail program, reading
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messages, and later trying to send them by user-defined commands. A typical
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use of extsmail is to allow users who regularly move between different
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networks and / or find themselves regularly offline, to ensure that their
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e-mail is sent reliably via ssh to external servers.
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In addition to its main purpose, extsmail also allows priority lists to be
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defined, and also for e-mails to be routed to different servers depending on
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the e-mail content. The former feature allows one to designate a "preferred"
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server to send e-mail, but to use a "backup" server if the preferred server
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is down. The latter feature allows e-mails sent to different e-mail
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addresses, for example, to be routed to different servers; this allows
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e-mails to adhere to the IP addressed filtering increasingly used to cut
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down on spam.
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