https://bugs.exim.org/show_bug.cgi?id=2702
Bug ID: 2702
Summary: XCLIENT ESMTP extension
Product: Exim
Version: 4.94
Hardware: x86
OS: Linux
Status: NEW
Severity: wishlist
Priority: low
Component: Mail Receipt
Assignee: unallocated@???
Reporter: jgh146exb@???
CC: exim-dev@???
A fork of the Exim project is carrying (among others) a patch adding XCLIENT
support, per
http://www.postfix.org/XCLIENT_README.html . We might consider
doing
the same. This is an inbound proxy method, like Proxy Protocol but triggered
by
an SMTP command.
The patch
https://github.com/SpamExperts/exim/commit/3798d48d73c89f7835726d31f096851f7f7fca2a
isn't immediately usable:
- Proper handling of the proxy address/port details, for logging
- We should consider re-calling the connect ACL, after deciding to accept the
XCLIENT command, to give the chance to re-evaluate connect-time decisions
with the proxy-supplied info for the connection
- Ditto re-call the helo ACL, with the HELO attribute value
- We could consider a dedicated ACL for the command, separate from the
allowed-hosts list (still needed for advertise)
- It should be a compile-time option, initially Experimental
- duplicated code: xclient_xtextdecode() vs. auth_xtextdecode()
- (nit) coding style
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