Date: Thu, 6 Jan 2000 14:43:19 -0500 From: "Will Mitayai Keeso Rowe" <mitayai@bricsnet.com> To: "Brad Knowles" <blk@skynet.be>, "David Wolfskill" <dhw@whistle.com>, <freebsd-stable@FreeBSD.ORG> Subject: RE: Sendmail, 3.3-STABLE, relaying Message-ID: <NDBBIBPPALJNCAALNFFAOEGCCGAA.mitayai@bricsnet.com> In-Reply-To: <v0422081db49a81bd469b@[195.238.1.121]>
next in thread | previous in thread | raw e-mail | index | archive | help
ok, so how would i deny access to an entire C-Class? -----Original Message----- From: Brad Knowles [mailto:blk@skynet.be] Sent: January 6, 2000 12:32 PM To: Will Mitayai Keeso Rowe; David Wolfskill; freebsd-stable@FreeBSD.ORG Subject: RE: Sendmail, 3.3-STABLE, relaying At 11:48 AM -0500 2000/1/6, Will Mitayai Keeso Rowe wrote: > i want IPs resolving reversely as *.company.com to be able to relay through > that host. Keep in mind that any spammer that owns his own reverse DNS (which is not uncommon) can claim to be fred.company.com, and you would allow him to relay through your server. I strongly suggest that you allow the ability to relay *purely* by IP address, and if you wish to prevent anyone from being able to send you mail (by using the REJECT option), do that by hostname, envelope sender address, or IP address. -- These are my opinions -- not to be taken as official Skynet policy ____________________________________________________________________ |o| Brad Knowles, <blk@skynet.be> Belgacom Skynet NV/SA |o| |o| Systems Architect, News & FTP Admin Rue Col. Bourg, 124 |o| |o| Phone/Fax: +32-2-706.11.11/12.49 B-1140 Brussels |o| |o| http://www.skynet.be Belgium |o| \/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/ Unix is like a wigwam -- no Gates, no Windows, and an Apache inside. Unix is very user-friendly. It's just picky who its friends are. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?NDBBIBPPALJNCAALNFFAOEGCCGAA.mitayai>