MTA Logging – Incoming SMTP Message Routed Through the Conversion Channel

This example illustrates the case of a message routed through the conversion channel. The site is assumed to have a CONVERSIONS mapping table such as:

CONVERSIONS
  IN-CHAN=tcp_local;OUT-CHAN=l;CONVERT   Yes

This example assumes option settings of LOG_FILENAME=1 and LOG_MESSAGE_ID=1.

Example 21–8 MTA Logging – Incoming SMTP Message Routed Through the Conversion Channel

04-Feb-1998 00:06:26.72 tcp_local    conversion   E 9      (1)
  amy@siroe.edu rfc822;bert@sesta.com bert@sesta.com
  imta/queue/conversion/ZZ01IT5UAMZ4QW98518O.00
  <01IT5UALL14498518O@siroe.edu>
 
 04-Feb-1998 00:06:29.06 conversion   l            E 9     (2)
                   amy@siroe.edu rfc822;bert@sesta.com bert
  imta/queue/l/ZZ01IT5UAOXLDW98509E.00  <01IT5STUMUFO984Z8L@siroe.edu>
 
04-Feb-1998 00:06:29.31 conversion                D 9      (3)
 amy@siroe.edu rfc822;bert@sesta.com bert
 imta/queue/conversion/ZZ01IT5UAMZ4QW98518O.00
 <01IT5UALL14498518O@siroe.edu>
 
 04-Feb-1998 00:06:32.62 l                         D 9     (4)
  amy@siroe.edu rfc822;bert@siroe.com bert
  imta/queue/l/ZZ01IT5UAOXLDW98509E.00
  <01IT5STUMUFO984Z8L@siroe.edu>

               

1. The message from external user amy@siroe.edu comes in addressed to the l channel recipient bert@sesta.com. The CONVERSIONS mapping entry, however, causes the message to be initially enqueued to the conversion channel (rather than directly to the l channel).

2. The conversion channel runs and enqueues the message to the l channel.

3. Then the conversion channel can dequeue the message (delete the old message file).

4. And finally the l channel dequeues (delivers) the message.