Re: changing From in email envelope

On Mon, 01 Oct 2007 22:57:34 -0400, Jerry Stuckle <jstucklex@xxxxxxxxxxxxx>
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.

You might be thinking of how a server will do a lookup on the domain that
is given in the FROM. That is different.

Some MUAs will give the name of any common Windows box in the HELO. We
won't expect a mail agent to lookup those :)

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.
.

Relevant Pages

  • Re: changing From in email envelope
    ... Exim (just as there was an Exim way to override what goes into the ... Many MTA's will validate a server is who it says it is via reverse domain lookup. ... You aren't giving away your account name. ...
    (comp.lang.php)
  • Re: changing From in email envelope
    ... Exim (just as there was an Exim way to override what goes into the ... called rDNS, not reverse domain lookup. ... then do a rdns lookup on it. ... You aren't giving away your account name. ...
    (comp.lang.php)
  • Re: changing From in email envelope
    ... Exim (just as there was an Exim way to override what goes into the ... Many MTA's will validate a server is who it says it is via reverse domain lookup. ... then do a rdns lookup on it. ...
    (comp.lang.php)