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Date: Mon, 19 Jan 1998 10:47:50 -0800 (PST)
From: Dan Busarow <dan@dpcsys.com>
To: Leif Neland <leifn@image.dk>
cc: freebsd-questions@FreeBSD.ORG
Subject: Re: sendmail Question
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On 16 Jan 1998, Leif Neland wrote:
> I don't think so. But you _will_ get lots of mail. Containing the lines ehlo
> your.domain, etrn @your.domain, quit.

Oops, you're right.  Here's what works

*/15 * * * * (echo etrn @domain.name;sleep 5;echo quit) | telnet mail.isp smtp

And you'll probably want to redirect stdout to /dev/null 

Dan
-- 
 Dan Busarow                                                  714 443 4172
 DPC Systems / Beach.Net                                    dan@dpcsys.com
 Dana Point, California  83 09 EF 59 E0 11 89 B4   8D 09 DB FD E1 DD 0C 82