MAILER Declarations

Delivery agents are declared using the MAILER directive:

MAILER(agent)

The available agents are listed in the cf/mailer directory (see §19.3.2). For example, consider:

MAILER(local) MAILER(smtp)

Here, the first includes support for local delivery, delivery to files, and delivery through programs. The second allows the sendmail daemon to accept incoming mail.

• cyrus
• Declares cyrus for delivery to the Cyrus IMAP4 server, and cyrusbb for delivery to a Cyrus bulletin board.
• fax
• Declares fax for delivery to a mail-to-fax gateway.
• local
• Declares local for delivery to a local mailbox and prog for delivery through a shell program.
• mail11
• Declares mail11 for delivery to a DECnet/mail11 gateway.
• phquery
• Declares ph, which uses the phquery program to send to the ph directory service.
• pop
• Declares pop for delivery through the MH spop program.
• procmail
• Declares procmail for delivery using the procmail program.
• smtp
• Declares smtp, which handles SMTP mail; esmtp, which always speaks ESMTP instead of adapting on the basis of the greeting message; smtp8, which always uses sends-8-bit data directly; and relay, which uses SMTP with minimal rewriting and only works within a single domain.
• usenet
• Declares usenet for delivery to a mail-to-news gateway.
• uucp
• Declares uucp-old, uucp-new, uucp-uudom, and uucp-dom. Use uucp-old if your peers are running very old (V7) versions of UUCP. Use uucp-new if they are running a newer version (e.g., honey danber) but don't understand domain-based addressing. Use uucp-uudom if your peers use UUCP addresses (e.g., host!user) in the envelope, but domain-based addresses (user@host.domain) in the headers. Use uucp-dom if your peers are completely converted to domain-based addressing. The last two are only defined if MAILER(smtp) is declared before MAILER(uucp).