*BSD News Article 73611


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From: hill@fl.ioffe.rssi.ru (Andrey Y. Khilko)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Mail......What does this mean??
Date: 13 Jul 1996 14:40:25 GMT
Organization: A.F.Ioffe Physico-Technical Institute. Russian Academy of Sciences.
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Scott Gregory (sgregory@pubspo.hq.af.mil) wrote:

: Jul 12 10:38:43 my.sys.name sendmail[17654]:  foo.bar
: [123.123.123.123]: vrfy lhammer

: What does this mean??  I know date, time, sys name, log entry,

That is address verification. If user lhammer exsists sendmail returns
something like `Real Name <lhammer@my.sys.name>`. Otherwise it returns
`user unknown`.

: Is this a security concern??  I'm STILL new at this so please explain

It is up to you to decide.

SY, Andrey Khilko