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List:       postfix-users
Subject:    Re: VRFY defaults to on--why?
From:       LuKreme <kremels () kreme ! com>
Date:       2010-01-31 20:45:41
Message-ID: 19AEEF54-5652-47DA-8B74-17F2DD342F04 () kreme ! com
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On 31-Jan-2010, at 12:21, Wietse Venema wrote:
> 
> Server implementations SHOULD support both VRFY and EXPN.  For
> security reasons, implementations MAY provide local installations a
> way to disable either or both of these commands through configuration
> options or the equivalent.

And SHOULD is well-defined in RFC 2119

SHOULD   This word, or the adjective "RECOMMENDED", mean that there
   may exist valid reasons in particular circumstances to ignore a
   particular item, but the full implications must be understood and
   carefully weighed before choosing a different course.

-- 
The real world was far too real to leave neat little hints. It was full of too many \
things. It wasn't by eliminating the impossible that you got at the truth, however \
improbable; it was by the much harder process of eliminating the possibilities. \
--Feet of Clay


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