On Thu, Jun 25, 2009 at 11:40:32PM -0700, Rob Tanner wrote:
> On 6/25/09 10:16 PM, "Victor Duchovni" <[email protected]>
> wrote:
>
> > On Thu, Jun 25, 2009 at 10:36:09PM -0400, Sahil Tandon wrote:
> >
> >>> IIRC, the instance attribute identifies a mail transaction and is assigned
> >>> before the queue-id.
> >>
> >> My bad reading of src/smtpd/smtpd_check.c, then. But does that mean an
> >> instance can exist *before* the first recipient is accepted? For context:
> >> http://www.irbs.net/internet/postfix/0412/0896.html
> >
> > Yes. An instance (transaction) id is assigned at "MAIL FROM:" time,
> > provided the "MAIL" command iis not rejected.
>
> Problem is that none of that actually answers my original question about why
> I'm receiving some requests with no instance attribute. Here's the
> pertinent bit from main.cf:
>
> smtpd_helo_restrictions =
> smtpd_client_restrictions =
> smtpd_sender_restrictions =
> smtpd_recipient_restrictions =
> check_policy_service inet:127.0.0.1:9250
> hash:/etc/postfix/protected_destinations,proxy:ldap:limittag
> permit_mynetworks
> permit_sasl_authenticated
> reject_unauth_destination
> reject_invalid_hostname
> reject_non_fqdn_recipient
> reject_unknown_sender_domain
> reject_unknown_recipient_domain
> check_client_access hash:/etc/postfix/client_checks
The instance attribute is always sent, and is non-empty when the check
is in the middle of an SMTP transaction (i.e. after MAIL and before a
subsequent ".", EHLO/HELO or RSET). In your case it looks like it should
always be non-empty.
Perhaps your parsing of the policy request is incomplete.
Did you read all the attributes up to a blank line?
Is your Postfix release so old that what is true for recent
versions was not true for yours?
Do you have policy callbacks for "ETRN"?
Do post a complete policy request (the full multi-line A/V list prior
to parsing) as recorded by your policy service?
--
Viktor.
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