groupfwd

An application that takes an email (by default, from stdin) and forwards it to all members of a Unix group with sendmail. Intended for use with Sieve Extprograms.

Note that, because Sieve Extprograms don't receive a PATH variable, this program expects the sendmail binary at a hardcoded location, /usr/sbin/sendmail. You can change this location by editing the SENDMAIL_LOCATION constant in lib.rs.

Building

Build dependencies:

• Cargo

Just build with Cargo, e.g.

$ cargo build --release

The executable will be located at target/release/groupfwd.

Usage

Runtime dependencies:

• sendmail (see above about expected location)

As a command line program:

$ cat email.eml | groupfwd wheel

Sends email.eml to all members of wheel.

$ groupfwd -f email.eml wheel

does the same as above.

As a Sieve filter:

Place the groupfwd binary in the directory specified by sieve_filter_bin_dir in your Dovecot config. Then, to use it in your Sieve scripts,

require "vnd.dovecot.filter";
filter "groupfwd" "students";

will forward all incoming emails to members of the students group.