Sendmail to duplicate messages
m.seaman at infracaninophile.co.uk
Tue Jul 21 10:12:47 UTC 2009
Olivier Nicole wrote:
> What rule, in what file should I set-up to have my mail sendmail mail
> server duplicate all messages to another mail server?
> I am in the proces sof setting-up a new mail server; in the meantime I
> want all messages arriving to my current mail server under sendmail to
> be duplicated to the new mail server (under postfix, for all it
> matters); so the mailboxes are keept in sync.
> How can I do that with sendmail?
I believe you should be able to do this with virtusertable. You will need to
configure the new machine to accept e-mail using a distinct domain so the old
server can route e-mail to it, and the new server would need to accept your
actual domain name for delivery too.
Then you need is a /etc/mail/virtusertable file with contents like so:
This should have the effect that e-mail for 'foo at your-domain.com' is
delivered to 'foo at new.your-domain.com' (your new mail server) and to
'foo' -- a local username on the old server. This should only modify the
envelope addresses, not rewrite the headers in the message itself.
You might need to add
to your $(hostname).mc file, but it should just work with the standard
freebsd.mc configuration, so long as 'your-domain.com' appears in /etc/mail/local-host-names. For more information see entries matching
virtusertable in /usr/share/sendmail/cf/README
Alternately, if your back-end mail store is using IMAP, then you can use
imapsync (ports: mail/imapsync) to duplicate mail account contents from the
old server to the new one.
Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard
PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate
Kent, CT11 9PW
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