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Re: [ietf-smtp] Adding a new value to the WITH protocol type subregistry

2018-07-13 13:11:30
The alternative is modifying the proxy code to insert its own Received
header.  That would add a lot of overhead to what is otherwise a very
lightweight front end defence on our SMTP servers.

I don't get it.  The proxy gathers the info that it is putting into
the logs anyway and stuffs a Received: line to the next stage ahead of
the body of the message.  This doesn't seem like a lot of work.  It
should be able to do that before reading the body of the message from
the incoming connection so it doesn't need any extra buffering.

What am I missing?  Or are you saying the proxy passes a pointer to
the socket rather than the contents?

Or better still, use XCLIENT. This is it's main use-case.

Seems reasonable.  Are there descriptions of it beyond what's in that
web page?


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