On Mon, 5 Mar 2001 10:41:52 -0500 (EST), Wietse Venema wrote:

>Volker Apelt:
[snip - problems with $var substitution in lusr_relay ]
>> eg: luser_relay = $relayhost
>
># The luser_relay parameter specifies an optional destination address
># for unknown recipients. By default, mail for unknown local recipients
># is bounced.
>#
># The following expansions are done on luser_relay: $user (recipient
># username), $shell (recipient shell), $home (recipient home directory),
># $recipient (full recipient address), $extension (recipient address
># extension), $domain (recipient domain), $local (entire recipient
># localpart), $recipient_delimiter. Specify ${name?value} or
># ${name:value} to expand value only when $name does (does not) exist.
>#
># luser_relay = $userother.host
># luser_relay = $localother.host
># luser_relay = admin+$local

[summay of a short dissussion about lusr_relay with Wietse Venema]

Volker> And it does not expand any other variables ?! So, these
expansions
Volker> are not _in_addition_ to the usual expansions ?

Wietse> Why don't you believe you my documentation? I actually spend
a fair
Wietse> amount of time on such things.

Volker>.. and the documentation is one of the best I have seen yet.
:-)
Volker>But, there was still an opportunity for a missunderstanding.

Volker> these lines could be added to the comments above.
Volker># No other expansions are performed on luser_relay in
Volker># addition to those listed above.

Volker> Why?

Wietse> The expansion of $name is done at a different time, and by
different
Wietse> code, than the normal main.cf expansions.

Volker> It would be very convenient to have only one location where
relayhost
Volker> is defined instead of multiple.

Wietse> You cannot specify a hostname as user_relay.

Thank You

Volker

-- 
Volker Apelt               Group of Prof. Dr. Ch. Griesinger
                           Johann Wolfgang Goethe Universitaet
                           Frankfurt am Main (Germany)
vakrypton.org.chemie.uni-frankfurt.de

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