On 1/17/2014 12:36 PM, Sven Hartge wrote: ...
http://www.exim.org/exim-html-current/doc/html/spec_html/ch-access_control_l...
,---- | control = cutthrough_delivery | | This option requests delivery be attempted while the item is being | received. It is usable in the RCPT ACL and valid only for | single-recipient mails forwarded from one SMTP connection to another. If | a recipient-verify callout connection is requested in the same ACL it is | held open and used for the data, otherwise one is made after the ACL | completes. Note that routers are used in verify mode. | | Should the ultimate destination system positively accept or reject the | mail, a corresponding indication is given to the source system and | nothing is queued. If there is a temporary error the item is queued for | later delivery in the usual fashion. If the item is successfully | delivered in cutthrough mode the log line is tagged with ">>" rather | than "=>" and appears before the acceptance "<=" line. | | Delivery in this mode avoids the generation of a bounce mail to a | (possibly faked) sender when the destination system is doing | content-scan based rejection. `----
The OP is obviously making accept/reject decisions at the gateway MTAs using the usual SMTP connection and header analysis methods, and -then- doing his SA scoring. So this cutthrough mode simply won't work. The mail must be accepted and queued, piped to SA for analysis, re-queued, then relayed to his mailbox servers.
-- Stan