Address rewriting in mail11v3/mail11v3d ?

[Jeff Michaud]

> ... the sending node's name (the node where the mail11dv3
> runs) is prefixed to the From address, e.g. node::u at h.domain. This makes
> it impossible directly to reply to the message.


		node::user

	and the same on incoming mail.  On incoming we use the same
	syntax.  The problem lies in the precendence the node::user
	syntax get's on outgoing when sendmail cononicalizes the
	address.  For your example:

		node::u at h.domain

	sendmail gives the @ syntax higher precendence, so see's

		h.domain

	as the host to send mail to, and sees

		node::u

	as the recipient on host h.domain.

	Something you may want to try is the undocumented:

		mail11d.DomainStyleFrom

	option.  What mail11dv3 does in this case on incoming for the
	From line is present it to sendmail as:

		user at node.dnet

	vs. the node::user syntax.  I believe I added this option for
	Fred (hi fred!), and I can't recall if it solved the problem
	with this undocumented option alone, or whether a sendmail
	config file change is also needed.

> Mail11v3 and/or mail11dv3 have the knowledge to distinguish between VMS
> and Ultrix host, since they exchange OS information on connecting.

	Unlucky for us however, VMSmail seems to have a bug that makes
	it impossible to special case based on OS type on *outgoing*
	mail.  VMS's slave mail-11 server doesn't return "VMS" as their
	OS type, but instead echo's back the OS type of the master side
	of the connection.  Ie. VMS says it is ULTRIX when we connect
	to them :-(.  Try enabling mail11's undocumented verbose option
	then use:

		mail -v node::user

	to see which OS type a remote "node" says it is.

> I have tried using the undocumented command mail11dv3.AcceptNodePrefixed:
> off, but it doesn't seems to help.

	Sorry, that option, if you were to enable it, only allows the
	master side to prepend their own nodename on the from line.
	ULTRIX doesn't request the option.  The feature is intended
	to allow DECnet-DOS machines to pretend the mail is coming
	from a node to which they can actually receive replies back
	to.  I don't know if DECnet-DOS ever requests the option
	however.  In any case, the option is disabled by default
	for mail11d for obvious reasons (ie. in the name of security).

/--------------------------------------------------------------\
|Jeff Michaud    michaud at decwrl.dec.com  michaud at decvax.dec.com|
|DECnet-ULTRIX   #include <standard/disclaimer.h>              |
\--------------------------------------------------------------/