CentOS - Jun 2010 - cyrus-imapd, sendmail and delivering plus address formats

CentOS-4.8
cyrus-imapd-2.2.12-10
sendmail-8.13.1-3.3

I have a mail hub which uses cyrus-imap with sendmail  It has worked
well for us on this and prior hosts going back to 1995.  And, I do
not have a problem with the current setup.

What I would like to do however, is to deliver plus-formatted e-mail
addresses directly to users subfolders in their mailbox tree.  Such
addresses take the form
userid+subfolder+sub-subfolder at domainname.tld. How this is done I
have not discovered. What I always get is an  ".Address Unknown"
smtp error.

I have gone to both the cyrus and the sendmail lists respecting this
issue. While there is a lot of information there following any of it
does not seem to lead me anywhere fruitful.

Does anyone here run a sendmail/cyrus-imap combination on CentOS
that has direct delivery into user mailbox subfolders using the plus
address format working?  Is so, would you be so kind as to provide
an outline of how this is done?


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***          E-Mail is NOT a SECURE channel          ***
James B. Byrne                mailto:ByrneJB at Harte-Lyne.ca
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Hamilton, Ontario             fax: +1 905 561 0757
Canada  L8E 3C3

Am 15.06.2010 20:55, schrieb James B. Byrne:
> CentOS-4.8
> cyrus-imapd-2.2.12-10
> sendmail-8.13.1-3.3
> 
> I have a mail hub which uses cyrus-imap with sendmail  It has worked
> well for us on this and prior hosts going back to 1995.  And, I do
> not have a problem with the current setup.
> 
> What I would like to do however, is to deliver plus-formatted e-mail
> addresses directly to users subfolders in their mailbox tree.  Such
> addresses take the form
> userid+subfolder+sub-subfolder at domainname.tld. How this is done I
> have not discovered. What I always get is an  ".Address Unknown"
> smtp error.
Are you tackling with that for over 1 year now?

http://lists.centos.org/pipermail/centos/2009-April/074662.html

And do you really intend to address a sub-sub-folder? How about starting
to address to a direct subfolder of INBOX?
> I have gone to both the cyrus and the sendmail lists respecting this
> issue. While there is a lot of information there following any of it
> does not seem to lead me anywhere fruitful.
Which Sendmail list? I just know of mail.comp.sendmail on usenet. On the
cyrus-imapd mailing list I see no current posting.

But to come to your request. Unfortunately you provide zero detail about
your current Sendmail and Cyrus-IMAPd setup and their interaction. So
many questions on my side.
> Does anyone here run a sendmail/cyrus-imap combination on CentOS
> that has direct delivery into user mailbox subfolders using the plus
> address format working?  Is so, would you be so kind as to provide
> an outline of how this is done?
Pplease provide details about your current setup and we should be able
to nail it down. There is nothing special about the Sendmail and
Cyrus-IMAPd shipped with CentOS.

Regards

Alexander

On 6/15/2010 1:55 PM, James B. Byrne wrote:
> CentOS-4.8
> cyrus-imapd-2.2.12-10
> sendmail-8.13.1-3.3
>
> I have a mail hub which uses cyrus-imap with sendmail  It has worked
> well for us on this and prior hosts going back to 1995.  And, I do
> not have a problem with the current setup.
>
> What I would like to do however, is to deliver plus-formatted e-mail
> addresses directly to users subfolders in their mailbox tree.  Such
> addresses take the form
> userid+subfolder+sub-subfolder at domainname.tld. How this is done I
> have not discovered. What I always get is an  ".Address Unknown"
> smtp error.
Wild guess: sendmail will lowercase the local part to normalize 
usernames as it delivers to cyrus.  Are your folder names all lowercase?

-- 
   Les Mikesell
    lesmikesell at gmail.com