we have dropped customers using our S-DSL services before who would not take the time to setup their email sever correctly to prevent relaying...
We give a customer 2 notices to their open server issue; after that we provide notice to termination of service for failure to comply with our EUA and send them off to someone else.... Sincerely, ------------ Randy Armbrecht Global Web Solutions�, Inc. (804) 346-5300 x112 (877) 800-GLOBAL x112 http://globalweb.net http://e-globalweb.net ---------- Original Message ---------------------------------- From: Adam Campbell <[EMAIL PROTECTED]> Reply-To: [email protected] Date: Thu, 24 Mar 2005 10:42:55 -0500 >If the internet did not have the problem of open proxies/zombies, would >you have that opinion? > >Is there an RFC declaring what type of connection sending hosts should >communicate via SMTP? I'm sure there is open proxy/zombie using a SDSL >or T1 line somewhere on the internet. > >I admit that I agree with you about the Reverse DNS. I assumed that >since there was an entry that was enough. I am a little surprised that >this issue hasn't come up before. > >adamc > > >William Van Hefner wrote: >> Jason, >> >> I can't speak for anyone else here, but my opinion of ADSL Ips sending >> e-mail directly to my servers is that it should be shot on sight. At best, >> maybe .1% of mail coming directly from ADSL connections is legitimate, and >> I'm being extremely gracious with that number. >> >> Yes, it is possible to have a "legitimate" mail server set up on an ADSL >> line with a subscriber network RDNS. It is also theoretically possible to >> host a "legitimate" mail server on a dial-up connection, on an open proxy, >> on a server with an open relay or on an IP range in China that has been >> blacklisted by every single DNSRBL in the universe. There are all kinds of >> remote possibilities. I draw the line when 99.9%+ of the traffic is spam. At >> least with Imgate the odd legitimate sender receives notice of the delivery >> failure, unlike with Scott's weighting system. >> >> Anyone who goes the cheap route and routes all of their e-mail via a single >> MX on an ADSL connection without bothering to configure RDNS is truly >> getting what they pay for. If a company can't justify the money to spend on >> at least getting a dedicated SDSL circuit or fractional T1, then they really >> need to rethink their IT strategy. >> >> William Van Hefner >> Network Administrator >> Vantek Communications, Inc. >> > >To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html >List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ >Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ > To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
