On Wed, 7 Jul 2004, Sander Holthaus - Orange XL wrote:

> Just a quick question. As was reading up on my RFC and came across RFC1123
> which states that you MUST NOT reject bad HELO's? Is this behaviour and that

But some other RFC say that HELO MUST be a valid name :)

> of bofhcheckhelo "legal" to RFC 1123 or more current RFC's? Is RFC1123
> superseded by some RFC (can't seem to find a RFC-repository that gives me
> accurate information on this) which allows rejecting of bad HELO's?

Rejecting bad HELO's is very efficient way to reject spam and
viruses/worms without even receiving and checking the whole mail (saving
cpu and net). If we want to be strict to RFC we can make all HELO checking
disabled by default.

-- 
Grzegorz Janoszka


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