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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: unwise filtering policy from cox.net
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - -- Sean Donelan <[email protected]> wrote: >On Tue, 20 Nov 2007, [email protected] wrote: >> <[email protected]> >> (reason: 552 5.2.0 F77u1Y00B2ccxfT0000000 Message Refused. A URL in >> the content of your message was found on...uribl.com. For resolution do >> not contact Cox Communications, contact the block list administrators.) > >An unfortunate limitation of the SMTP protocol is it initially only >looks at the right-hand side of an address when connecting to a >server to send e-mail, and not the left-hand side. This means >[email protected] first passes through the same server as all of >the rest of *@example.com e-mail. A single high-volume or special >address can easily overwhelm the normal email infrastructure (i.e. mailbox > full) or the normal server administrators may make changes which affects >all addresses passing through that server (i.e. block by IP address). > Sure, it's an "unfortunate limitation", but I hardly think it's an issue to hand-wave about and say "oh, well". Suggestions? - - ferg -----BEGIN PGP SIGNATURE----- Version: PGP Desktop 9.6.3 (Build 3017) wj8DBQFHQ9V5q1pz9mNUZTMRAvCjAJ9VGB/7LicKsAXUwSwbmRVntfXm8gCgjEYT y9YWpm8OhqCDI5nPDBy6kZY= =OqQL -----END PGP SIGNATURE----- -- "Fergie", a.k.a. Paul Ferguson Engineering Architecture for the Internet fergdawg(at)netzero.net ferg's tech blog: http://fergdawg.blogspot.com/
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