From: Remko Molier (rmoliermore-it.com)
Date: Thu Jan 12 2006 - 13:54:55 CST

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Remko Molier wrote:

> Hi,
>
> For the last two days I have been - unsuccessfully - trying to get the
> address extension in postfix to work for address extensions that use
> capitals letters (e.g. rmolier+Junkmore-it.com) and are mapped
> (virtual) to different e-mail addresses. In one way or the other
> postfix always seems to convert them to lowercase.
>
> The only way I have been able to make it work is by adding a line for
> every
>
> -/etc/postfix/virtual:
> ...
>
> rmoliermore-it.com mesomewhere.com, mesomewhereelse.com
> rmolier+Junkmore-it.com me+Junksomewhere.com,
> me+Junksomewhereelse.com
>
> ....
>
> By looking at the output of the cleanup process in verbose mode, I
> figured out that this case conversion is taking place in the
> mail_addr_map function:
>
> Jan 12 18:25:29 torvalds postfix/cleanup[32692]: mail_addr_map:
> rmolier+Junkmore-it.com -> 0: rmolier+junkmore-it.com
> Jan 12 18:25:29 torvalds postfix/cleanup[32692]: been_here:
> rmolier+Junkmore-it.com: 0
> Jan 12 18:25:29 torvalds postfix/cleanup[32692]: been_here_check:
> rmolier+junkmore-it.com: 1
> Jan 12 18:25:29 torvalds postfix/cleanup[32692]: been_here:
> rmolier+Junkmore-it.com?rmolier+junkmore-it.com: 0
>
> Looking at the code, it made it obvious that in
> global/mail_addr_map.c the extension, which is taken from the call to
> mail_addr_find() and saved for propagating the extension to the
> addresses found is always in lowercase.
>
> The following patch for mail_addr_find.c fixes the problem:
>
> --- mail_addr_find.c 2004-01-20 18:44:21.000000000 +0100
> +++ updated/mail_addr_find.c 2006-01-12 19:44:47.000000000 +0100
> -107,7 +107,7
> if (*var_rcpt_delim == 0) {
> bare_key = saved_ext = 0;
> } else {
> - bare_key = strip_addr(full_key, &saved_ext, *var_rcpt_delim);
> + bare_key = lowercase(strip_addr(address, &saved_ext,
> *var_rcpt_delim));
> }
>
> /*
>
> The patch is for 2.1.5 but I have noticed that both 2.2 and 2.3 suffer
> from the same problem.
>
> Hope it helps somebody..
>
> Regards,
>
> Remko Molier

Seems that I have made a boo-boo and posted an earlier version of the
patch. The following patch does the work:

--- postfix-2.1.5/src/global/mail_addr_find.c.address_extension
2004-01-20 18:44:21.000000000 +0100
+++ postfix-2.1.5/src/global/mail_addr_find.c 2006-01-12
19:46:47.000000000 +0100
-107,7 +107,10
     if (*var_rcpt_delim == 0) {
        bare_key = saved_ext = 0;
     } else {
- bare_key = strip_addr(full_key, &saved_ext, *var_rcpt_delim);
+ bare_key = strip_addr(address, &saved_ext, *var_rcpt_delim);
+ if (bare_key != 0) {
+ lowercase(bare_key);
+ }
     }

     /*

My apologies..

Remko Molier

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