[Dovecot] dovecot created mailbox empty - all mail forwarded to main MX server and cyrus-dovecot conflict

[/dev/rob0]

On Sat, Jul 03, 2010 at 08:36:03PM +0800, Hans Neukomm wrote:
> after lots of trial and error and the help of THIS mail list,

FWIW this one is posted on the wrong list; this one's a Postfix 
issue. Your hint for that should have been to see that the logs 
demonstrating the problem were entirely from Postfix.

> finally my dovecot-postfix combination seems to work
> yet
> the dovecot mail spool always is empty 
> all mail forwarded to my main mail server - but i have no mail 
> relay configured.
> 
> why is the mail NOT in the dovecot inbox but forwarded to
> another mail server ??

Because the kriyayoga host does not know it's supposed to be the 
final destination for kriyayoga.com. Anything not recognized as a 
locally-hosted destination will be routed as per DNS lookup.

http://www.postfix.org/ADDRESS_CLASS_README.html
http://www.postfix.org/VIRTUAL_README.html

> and why does postconf -A show cyrus and NOT dovecot ??

Irrelevant to your issue, this is normal. Dovecot does not have a 
client SASL implementation.

> below some relevant config data.
> 
> my goal is to have a clean simple dovecot+postfix mail system
> with nothing else (cyrus or so) involved when ever possible.
> 
> ---------- DNS MX stuff
> 
> dig mx kriyayoga.com
> ;; ANSWER SECTION:
> kriyayoga.com.          3600    IN      MX      10 smtp.kriyayoga.com.
> kriyayoga.com.          3600    IN      MX      0 mail.kriyayoga.com.

The dual MX is usually not a good idea. To do it right is far from 
simple. Your lower priority MX host will be a spam magnet.

> the new dovecot setup is tested on smtp.kriyayoga.com and when
> successfully working shall be used on both mail MX servers.

Two mailstores? Again, this is not simple to set up.

> ---------- 
> 
> postfix stuff relevant to dovecot
> 
>  >  postconf -A
> cyrus
> 
>  >  postconf -a
> cyrus
> dovecot
> 
> my postconf -n shows nothing about cyrus in the config
> NOR
> anything about mail-relay to my main MX
> 
> relayhost =
> mailbox_transport =
> mailbox_command =

Those all being default settings, they do not belong in main.cf.

> smtpd_sasl_type = dovecot
> virtual_transport = dovecot
> 
> ---------- below the mail log for sending mail to my dovecot box 
> 
> Jul  3 20:31:08 kriyayoga postfix/smtpd[27801]: connect from
> unknown[124.108.51.96]
> Jul  3 20:31:08 kriyayoga dovecot: auth(default): new auth connection:
> pid=27801
> Jul  3 20:31:09 kriyayoga dovecot: auth(default): client in:
> AUTH#0111#011PLAIN#011service=smtp#011nologin#011lip=78.46.101.111#011rip=124.108.51.96#011resp=aGFucwBoYW5zAEk4Q3Nhd084MUR4Y1JlTTh1QmgwTA==
> Jul  3 20:31:09 kriyayoga dovecot: auth(default):
> passwd-file(hans,124.108.51.96): lookup: user=hans
> file=/etc/dovecot/passwd
> Jul  3 20:31:09 kriyayoga dovecot: auth(default): client out:
> OK#0111#011user=hans

Okay, those are Dovecot logs, but not entirely relevant to the 
problem. The user hans authenticated successfully and is being 
permitted to relay to an external domain, kriyayoga.com.

> Jul  3 20:31:09 kriyayoga postfix/smtpd[27801]: BC90129D9F:
> client=unknown[124.108.51.96], sasl_method=PLAIN, sasl_username=hans
> Jul  3 20:31:10 kriyayoga postfix/cleanup[27807]: BC90129D9F:
> message-id=<201007032031.07830.hans at kriyayoga.com>
> Jul  3 20:31:10 kriyayoga postfix/qmgr[14627]: BC90129D9F:
> from=<hans at kriyayoga.com>, size=1287, nrcpt=2 (queue active)
> Jul  3 20:31:10 kriyayoga postfix/smtp[27808]: BC90129D9F:
> to=<hans at kriyayoga.com>, relay=mail.kriyayoga.com[88.198.14.45]:25,
> delay=0.95, delays=0.5/0.01/0.17/0.26, dsn=2.0.0, status=sent (250 Ok:
> queued as 97FCE138024)
> Jul  3 20:31:10 kriyayoga postfix/smtp[27808]: BC90129D9F:
> to=<hans at kriyayoga.com>, relay=mail.kriyayoga.com[88.198.14.45]:25,
> delay=0.95, delays=0.5/0.01/0.17/0.26, dsn=2.0.0, status=sent (250 Ok:
> queued as 97FCE138024)

According to the MX records you posted, mail.kriyayoga.com. is the 
highest priority ("0") MX host for kriyayoga.com. So the rest of the 
non-spamming world is going to send all kriyayoga.com. mail there as 
well.

> Jul  3 20:31:10 kriyayoga postfix/qmgr[14627]: BC90129D9F: removed
> 
> 
> at this point the mail is gone already - NO mail in my dovecot 
> inbox - NO error - just automatically relayed to my main MX

If you need to followup on this to the Postfix list, see:
http://www.postfix.org/DEBUG_README.html#mail
-- 
    Offlist mail to this address is discarded unless
    "/dev/rob0" or "not-spam" is in Subject: header