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Posted by Mtr on 10/02/07 14:36
On Tue, 02 Oct 2007 06:42:07 -0400, Jerry Stuckle <jstucklex@attglobal.net>
wrote:
>Mtr wrote:
>> On Mon, 01 Oct 2007 22:57:34 -0400, Jerry Stuckle <jstucklex@attglobal.net>
>> wrote:
>>
>>>> However, is there a PHP way to override the HELO/EHLO hostname that calls
>>>> Exim (just as there was an Exim way to override what goes into the
>>>> envelope's From).?
>>>>
>>> No. And you don't want to. Many MTA's will validate a server is who it
>>> says it is via reverse domain lookup.
>>
>> Hardly true, the name given on HELO is not used much anymore. And it is
>> called rDNS, not reverse domain lookup.
>>
>
>Actually, quite incorrect. Many sites
that would be a small minority. Else you can post an SMTP conversation from
any well known host that shows email being rejected because of the HELO.
Try privacy-invading google, e.g.
><validate the HELO name - first
>for syntax, then do a rdns lookup on it. MTA's on all of the Linux
>sites I manage do it, as do many other people I know. You should check
>the MTA newsgroups.
>
>Also, it is called both rdns and reverse domain name lookup - and has
>been for over 30 years.
I was just pulling your chain.
>
>> You might be thinking of how a server will do a lookup on the domain that
>> is given in the FROM. That is different.
>>
>
>No, I'm not thinking of that at all.
>
>> Some MUAs will give the name of any common Windows box in the HELO. We
>> won't expect a mail agent to lookup those :)
>>
>
>I'm not talking about MUA's.
no, the agent (MTA) doesn't evaluate what the MUA sends
>
>>> And they will bounce (or just
>>> delete) any mail from mismatched names.
>>
>> Yes, I do. Because I don't want to give away my account name with every
>> email. Besides, I am calling Exim - I am not connecting via TCP socket, as
>> is obvious from my post. But thanks anyway.
>
>You aren't giving away your account name.
Do you presume that I don't know what my account name is, and that I don't
see it in the Received: line? This is on shared hosting.
>Exim is providing your
>computer (host) name.
>
>And it doesn't matter if you're calling Exim or not
it does if I'm trying to clue you in that Exim is on the same machine as my
account. Try to pay attention.
>(yes, I use Exim on
>all of the Linux systems I manage). This is a configuration parameter
>in Exim, not a user-defined parameter. As it should be, according to
>the RFC's.
>
>I suggest you follow this up on the Exim mailing list. You'll be told
>the same thing - for the same reasons.
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