[Dovecot] How to troubleshoot LDA or LMTP?

[John Williams]

Steffen Kaiser <skdovecot at smail.inf.fh-brs.de> writes:

> On Tue, 6 Aug 2013, John Williams wrote:
>
>>> 	dovecot-lda -c config-file -d user < mailfile
>> Aha!  Piping a message to the process was the step I was not aware of.
>
> does offlineimap provides logs to get to know what mails are newly 
> arriving to your local mail storage,
Yes.

> in order to not filter the same message twice or re-filter messages,
> you've moved around manually?
That is not a problem.  The filtering process works perfectly when I
manually invoke dovecot-lda.  My problem is that I have followed the
instructions here:

http://wiki2.dovecot.org/LDA/

and here:

http://wiki2.dovecot.org/LDA/Sendmail

and here:

http://wiki2.dovecot.org/LMTP

but neither dovecot-lda nor LMTP seem to be triggered whenever I send
email from my MUA (Gnus).  At least, I *think* I have followed the
instructions correctly.  Would you like me to post my dovecot config
again, and the relevant portion of sendmail.cf?

Thank you very much for your help, I truly appreciate it.