Re: Q: Is it possible to bind 2 diffrent qmail instances on 2 diffrent network interfaces

[Anand Buddhdev]

On Sun, May 16, 1999 at 12:24:05PM +0200, Peter van Dijk wrote:

> > That server is violating RFC 1123, section 5.2.5. You can easily work
> > around the problem by putting www.cheetahmail.com into control/helohost.
> > 
> > (I'm considering changing the default HELO in qmail-remote in qmail 2.0
> > to use the bracketed IP address of the client.)
> 
> How much of a standard is that?

RFC821:

HELO <SP> <domain> <CRLF>

<domain> ::=  <element> | <element> "." <domain>

<element> ::= <name> | "#" <number> | "[" <dotnum> "]"

<dotnum> ::= <snum> "." <snum> "." <snum> "." <snum>

<snum> ::= one, two, or three digits representing a decimal
           integer value in the range 0 through 255

Therefore,

HELO [199.103.176.41]

looks like it is acceptable.

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