[Dovecot] Issues with Plus addressing and detail part of subaddress.

[Charles Marcus]

On 2012-07-17 6:18 AM, Charles Marcus <CMarcus at Media-Brokers.com> wrote:
>> lda_original_recipient_header = X-Original-To
>> lmtp_save_to_detail_mailbox = yes

> Ok, I think this is the problem...
>
> Dovecot's LMTP currently does NOT preserve the x-original-to header...
> in fact, brought this up recently (I was one of the ones interested in
> Timo adding support for it) on this (and the postfix, which is what I
> use) on this very list:
>
> http://www.dovecot.org/list/dovecot/2012-April/065075.html
>
> Apparently, after Timo discussed this on the postfix list, he determined
> that it would not be a very significant change for him to make to add
> support for this header in LMTP and that he would get to it sooner than
> later, but as of now, it has not been added.

Ok, that's what I get for replying to an email like this before having 
at least my first cup of coffee... ;)

What Timo said was that LMTP doesn't currently have support for *adding* 
the headers, but it doesn't remove them either, so I misspoke when I 
said it doesn't *preserve* the headers - it does.

I had asked the question specifically because postfix's LMTP support 
does *not* provide the header, so Timo figured a way to add support for 
adding it in dovecot's LMTP implementation (but it currently doesn't 
have it).

So, since apparently sendmail *does* add it to its LMTP implementation, 
and apparently your sieve script works properly when it is present, you 
need it for it to work correctly.

Why, I do not know, but someone else with more knowledge can probably 
answer that one now.

-- 

Best regards,

Charles