makepercentrelay — Build a list of %-relayed domains
makepercentrelay
makepercentrelay reads
/etc/courier/esmtppercentrelay.dir
and creates /etc/courier/esmtppercentrelay.dat
which is a
binary
database file. The files /etc/courier/esmtppercentrelay
and
/etc/courier/esmtppercentrelay.dat
specify a list of
"percent-hack"
domains. /etc/courier/esmtppercentrelay
is a plain text
file,
containing one domain per line. Courier loads the contents of
/etc/courier/esmtppercentrelay
into memory, so if you
have a lot of
domains, you will want to use the binary database file. The
makepercentrelay command reads
/etc/courier/esmtppercentrelay.dir
, which can be either
a plain text
file itself, or a directory containing plain text files. All files in the
subdirectory are concatenated, and the binary database file is created from
the result.
Courier can use both /etc/courier/esmtppercentrelay
and
/etc/courier/esmtppercentrelay.dat
at the same time.
Usually you
would put a couple of your most frequent domains in
/etc/courier/esmtppercentrelay
, then put the rest in
/etc/courier/esmtppercentrelay.dir
, and use
makepercentrelay to turn it into a database file.
"percent-hack" domains are a list of domains for which Courier accepts mail
via ESMTP addressed as "local%percent.hack.domain@local.domain", where
"percent.hack.domain" is a domain found in
/etc/courier/esmtppercentrelay
or
/etc/courier/esmtppercentrelay.dat
, and
"local.domain
" is any domain
found in /etc/courier/locals
. Courier removes the local
domain, and
rewrites the address as "local@percent.hack.domain
", then
attempts to deliver it.
The percent hack applies only to mail received via ESMTP. Courier does not
check this list of domains if the message is received via any other way (such
as by running /usr/bin/sendmail directly from the command
line).
"percent.hack.domain
" would likely to be a domain that
Courier knows how to handle via some other means. It might be an entry in
/etc/courier/aliases
, or an entry in
/etc/courier/esmtproutes
.