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From: smart@manta.mel.dit.csiro.au (Robert Smart)
Newsgroups: comp.mail.sendmail
Subject: $h in IPC mailer line: meaning/use
Message-ID: <1990Jul12.040301.21074@mel.dit.csiro.au>
Date: 12 Jul 90 04:03:01 GMT
Sender: smart@mel.dit.csiro.au (Robert Smart)
Organization: CSIRO DIT (Melb.)
Lines: 15

In an MX mailer (I have only looked in 5.64/IDA/NIU) in deliver.c in
openmailer, if mailer is [IPC] then it seems to ignore the parameter.
So if your M line ends "A=IPC $h" the $h is ignored. It actually assigns
the value to CurHostName but that value is always overwritten by MX
records.

I have take the $h out of that line with no apparent ill affects from
a couple of tests. So now I would like to change deliver.c so that it
will only use MX records if there is no $h parameter. If there is a $h
parameter it will ignore the MXes and send the mail where I specify.
This for situations where I happen (usually temporarily) to know better
than the MXes or want to get somewhere that the MXes don't know about
yet. Any problems with this? Any reason why it isn't already that way?

Bob Smart <smart@mel.dit.csiro.au>