Hi Len,
i have talked to Jochen off list about his problem, sometimes its easier for
us to discuss things in german. He reported one strange thing to me.
If he telnets to port 25 of gw1.telekom.de he gets the response 200 OK.
If i try the same thing i get a response of 500 Command unrecognized.
I don�t think its a problem of reverse lookup or DNS.
I tried from my machine with his machine name and i can send messages from
the telnet session.
Somehow the wrong message is delivered to his server from the helo command.
Can it be a problem of his firewall or router?
Any ideas?
Heinrich
----- Original Message -----
From: "Len Conrad" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, March 17, 2000 2:07 PM
Subject: Re: AW: [IMail Forum] Sending mail to telekom.de
Hey Jochen,
I don't think the EHLO refusal by gw1 is why gw1 is refusing your messages,
but yes, you should understand what's going on with EHLO / HELO
variations. It certainly didn't stop it from accepting my msg.
Have you turned on smtp debugging while attempting to send a few msgs to
gw1? maybe you'll see something in those details.
Len
===============
>Hey Len!
>
>We have the same problems with our Linux machine gw03.isi-software.com
>wich has ablolutly correct settings ( I think )
>
>If I telnet on this machine, I get the same responses.
>
>ehlo...
>200 OK
>
>Jochen
>
>-----Urspr�ngliche Nachricht-----
>Von: Len Conrad [mailto:[EMAIL PROTECTED]]
>Gesendet: Freitag, 17. M�rz 2000 11:20
>An: [EMAIL PROTECTED]
>Betreff: Re: [IMail Forum] Sending mail to telekom.de
>
>
>isi-software.com doesn't have a reverse record (it doesn't have a forward,
>either, vbg !) but who cares? isi-software.com isn't the MX doing the
>sening, ns.isi-software.com is the sending MX to be reverse up ge-looked.
>
>The reverse for his primary MX, ns.isi-software.com, refers to
>www.isi-software.com.
>This may not be fatal, but it's not kosher.
>
>I would recommend that of all DNS records, the mail server's forward and
>reverse, at the very minimum, should be delegated correctly and the host
>names in sync.
>
>Len
>
>===============
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