On Sun, 2011-07-17 at 23:15 +0200, Alexander Dalloz wrote:
> The 2nd one in your list:
>
> Organisation: British Telecommunications, EU
> HELO / EHLO: smtpe1.intersmtp.com
> HELO IP: 62.239.224.89
> MX IP: 62.239.224.234
> MX DNS A record: smtp61.intersmtp.com
>
> Here smtpe1.intersmtp.com resolves properly forward and reverse, if that
> is what counts for you.
BUT the IP address used for the mail server was, as the list shows,
62.239.224.234 which, at the time, had a host name of
smtp61.intersmtp.com
smtpe1.intersmtp.com still does NOT properly resolve.
host smtpe1.intersmtp.com
smtpe1.intersmtp.com has address 62.239.224.89
host 62.239.224.89
89.224.239.62.in-addr.arpa domain name pointer smtpe1.intersmtp.COM.
*almost* correct. In Linux, like Unix and the pre-Microsoft days,
uppercase letters have a different numerical value to lowercase letters.
Uppercase 'COM' is definitely not the same as lowercase 'com'.
No wonder some call 'BT' Balls-up Telecoms.
Do your Mail Transfer Agents use valid or bogus HELO/EHLO names ?
--
With best regards,
Paul.
England,
EU.
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