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Date: Fri, 23 Aug 1996 12:54:37 -0500 (CDT)
From: Tony Kimball <alk@think.com>
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To: michaelv@MindBender.serv.net
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Subject: Re: mail storage 
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Quoth Michael L. VanLoon on Fri, 23 August:
: They probably just want you to run sendmail with a frequent retry.
: They could connect to you, dumping mail out, and your sendmail daemon
: should retry often enough to see that they are there and start dumping
: mail back to them.

Why not just write a tiny little inetd service to run
sendmail -q when you get a packet from their server?
A 5 minute perl hack.  The corresponding NT client
can also be a 5 minute perl hack.