nanog mailing list archives
Re: Paul's Mailfrom (Was: IETF SMTP Working Group Proposal at smtpng.org)
From: Iljitsch van Beijnum <iljitsch () muada com>
Date: Mon, 26 Aug 2002 22:34:28 +0200 (CEST)
On Mon, 26 Aug 2002, Jeroen Massar wrote:
ISP's should actually block port 25 outgoing, or even better, reroute/forward it to their own mail relay.
As a user, I pay my ISP to forward IP packets. If there happen to be TCP segments in those packets, that's something between me and the person the packet is addressed to, whether the destination port of those TCP segments is 25 or something else. As a network administrator, I don't want to filter applications. It burns too much CPU time on my routers, it costs me too much time to maintain those filters and it doesn't work anyway. Application people should make their applications secure and not impose restrictions on the network because they're too lazy to come up with a new protocol once every two decades or so.
Current thread:
- Re: Paul's Mailfrom (Was: IETF SMTP Working Group Proposal at, (continued)
- Re: Paul's Mailfrom (Was: IETF SMTP Working Group Proposal at Paul Vixie (Aug 27)
- Re: Paul's Mailfrom (Was: IETF SMTP Working Group Proposal at Brad Knowles (Aug 27)
- Re: Paul's Mailfrom (Was: IETF SMTP Working Group Proposal at Andy Dills (Aug 28)
- Re: Paul's Mailfrom (Was: IETF SMTP Working Group Proposal at Paul Vixie (Aug 28)
- Re: Paul's Mailfrom (Was: IETF SMTP Working Group Proposal at Brad Knowles (Aug 28)
- Re: Paul's Mailfrom (Was: IETF SMTP Working Group Proposal at Barry Shein (Aug 28)
- RE: Paul's Mailfrom (Was: IETF SMTP Working Group Proposal at Jeroen Massar (Aug 29)
- RE: Paul's Mailfrom (Was: IETF SMTP Working Group Proposal at Brad Knowles (Aug 29)
- RE: Paul's Mailfrom (Was: IETF SMTP Working Group Proposal at Barry Shein (Aug 30)
- Re: Paul's Mailfrom (Was: IETF SMTP Working Group Proposal at smtpng.org) John M. Brown (Aug 26)
- Re: Paul's Mailfrom (Was: IETF SMTP Working Group Proposal at smtpng.org) Iljitsch van Beijnum (Aug 26)
- Re: Paul's Mailfrom (Was: IETF SMTP Working Group Proposal at Paul Vixie (Aug 26)
- Re: Paul's Mailfrom (Was: IETF SMTP Working Group Proposal at Patrick (Aug 26)
- Re: Paul's Mailfrom (Was: IETF SMTP Working Group Proposal at Paul Vixie (Aug 26)
- Re: Paul's Mailfrom (Was: IETF SMTP Working Group Proposal at Patrick (Aug 26)
- Re: Paul's Mailfrom (Was: IETF SMTP Working Group Proposal at Scott A Crosby (Aug 29)
- Re: Paul's Mailfrom (Was: IETF SMTP Working Group Proposal at Paul Vixie (Aug 29)
- Re: Paul's Mailfrom (Was: IETF SMTP Working Group Proposal at David Van Duzer (Aug 26)
- Re: Paul's Mailfrom (Was: IETF SMTP Working Group Proposal at Paul Vixie (Aug 27)
- Re: Paul's Mailfrom (Was: IETF SMTP Working Group Proposal at Paul Vixie (Aug 27)
- Re: Paul's Mailfrom (Was: IETF SMTP Working Group Proposal at Barry Shein (Aug 27)