rewriting(5)
NAME
rewriting - syntactic changes to mail-address host names
DESCRIPTION
new-inject and ofmipd support a generic rewriting system
for Internet mail addresses. Each host name is trans
formed according to a series of instructions, as described
here. The instructions are followed in order, each at
most once.
An instruction is either =post:new, *post:new, ?post:new,
or -post:new. =post:new means that the host name post is
replaced by new. *post:new means that any host name of
the form prepost is replaced by prenew. ?post:new means
that any host name of the form prepost, where pre does not
contain dots or brackets, is replaced by prenew.
-post:new means that any host name of the form prepost is
replaced by new.
For example, the instruction *.: removes a trailing dot if
there is one; =:vangogh converts an empty host name into
vangogh; ?:.cs.b adds .cs.b to any host name without dots
or brackets; *.b:.berkeley.edu changes vangogh.cs.b into
vangogh.cs.berkeley.edu; -.local:cs.berkeley.edu converts
me.local into cs.berkeley.edu.
INSTRUCTION SOURCES
Rewriting instructions are normally listed in the rewrite
control file, one instruction per line.
- If rewrite does not exist, new-inject and ofmipd use the
control files defaultdomain, defaulthost, and plusdomain
in the following instructions:
- *.:
=:defaulthost
*+:.plusdomain
?:.defaultdomain - In other words: (1) If the host name ends with a dot,
remove the dot. (2) If the host name is empty, add
defaulthost. (3) If the host name ends with a plus sign, change the plus sign to a dot and add plusdomain. (4) If the host name does not contain dots or brackets, add a dot
and add defaultdomain. - The defaultdomain, defaulthost, and plusdomain control
files can be overridden by the environment variables
$QMAILDEFAULTDOMAIN, $QMAILDEFAULTHOST, and $QMAILPLUSDO MAIN respectively. They all default to me.