On Fri, 2003-09-26 at 12:40, Giuliano Gavazzi wrote:
> I found this just now in the logs:
>
> ... sender verify fail for <gavin-collins@???>: response to
> "RSET" from leeds.sin1.netline.net.uk [213.40.2.12] was: 550 Invalid
> use of null sender
>
> the transaction is:
>
> [ti:~] g% telnet 213.40.2.12 25
> Trying 213.40.2.12...
> Escape character is '^]'.
> 220 pail.sin1.netline.net.uk ESMTP Exim 4.24 Fri, 26 Sep 2003 12:31:55 +0100
> helo pupu
> 250 pail.sin1.netline.net.uk Hello xxxx.ngi.it [xxx.yyy.zzz.aaa]
> mail from: <>
> 250 OK
> RCPT TO: gavin-collins@???
> [a long pause from the server, presumably tarpitting]
> 550 Invalid use of null sender
> rset
> 250 Reset OK
>
> so the error is actually to RCPT. Or is RCPT not a synchronisation point?
It's actually a fault on the part of Supanet.com. They've had serious
issues with their mail servers recently relating to malware and
Verisign's recent actions. It looks like they've decided to block '<>'
senders for some daft reason.
I used to look after their email system (until I left in May to go
redesign Zen Internet's ones instead) so I am still in touch with their
current email admin. I'm just giving him a prod to show him the error of
his ways.
Jerry.
--
Jerry Nicholls
Core Internet Systems Designer
Zen Internet (
http://www.zen.co.uk)
Sales : 0845 058 9000
Fax : 0845 058 9005
