Sorry - I'm probably breaking threading... but a dime just dropped..
maybe..
Danny said in the OP:
"Based on my experience in the past if I modify the text of the message
*in any way* then the next retry will succeed."
(Emphasis added).
And that:
"If I take a text copy of the entire message and send it to the remote
SMTP server manually (i.e. with a simple telnet session to port 25) then
the message is delivered OK."
Which would introduce some byte-level diffrences as well..
- Is there perchance 'signature' or hash-based tool running on the
destination end?
- or a 'no dupes forever' setup?
- or anti-loop logic?
Bill Hacker
--
## List details at http://lists.exim.org/mailman/listinfo/exim-dev Exim details at http://www.exim.org/ ##
maybe..
Danny said in the OP:
"Based on my experience in the past if I modify the text of the message
*in any way* then the next retry will succeed."
(Emphasis added).
And that:
"If I take a text copy of the entire message and send it to the remote
SMTP server manually (i.e. with a simple telnet session to port 25) then
the message is delivered OK."
Which would introduce some byte-level diffrences as well..
- Is there perchance 'signature' or hash-based tool running on the
destination end?
- or a 'no dupes forever' setup?
- or anti-loop logic?
Bill Hacker
--
## List details at http://lists.exim.org/mailman/listinfo/exim-dev Exim details at http://www.exim.org/ ##