Date: Thu, 01 Jul 1999 15:37:52 +0200 From: sthaug@nethelp.no To: jason.thomson@mintel.co.uk Cc: freebsd-isp@freebsd.org Subject: Re: Sendmail 8.9.x check_mail anti-spam rule broken? Message-ID: <30282.930836272@verdi.nethelp.no> In-Reply-To: Your message of "Thu, 01 Jul 1999 12:41:44 %2B0100" References: <377B53F8.34DE5461@mintel.co.uk>
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> For example, some.one@btinternet.com gets rejected. But btinternet.com > has perfectly valid MX records. BT Internet is probably one of the UK's > biggest ISPs. They may be one of the UK's biggest ISPs. That doesn't mean they have a clue: - It appears that both of the btinternet.com name servers are on the same LAN segment (certainly behind the same router): btinternet.com. NS dns1.btinternet.com. btinternet.com. NS dns2.btinternet.com. dns1.btinternet.com. A 194.73.73.95 dns2.btinternet.com. A 194.73.73.94 and both behind a router at 194.74.74.71. (For that matter, both of their MX hosts also sit behind this same router.) - Neither of the btinternet.com name servers are authoritative for btinternet.com. This doesn't exactly give me great faith in BT Internet... Steinar Haug, Nethelp consulting, sthaug@nethelp.no To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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