Hi Jason, I guess you meant that your mail server is being used as a mail relaying / spamming which is very bad. Using the spam list or blackhole list will only prevent your server from receiving e-mails from the list only but not spammers that actively looking for open mail relay servers.
If that's the case you can have several solutions to be considered: 1) Relay by IP or network (traditional mail relaying blocking) 2) Relay by domain (not secure as DNS can be poisoned) 3) SMTP AUTH (RFC 2554 - implements SMTP AUTH - if the user needs to send e-mail through the mail server, then he/she must authenticate first) If you are using sendmail then you can refer to the documentation and tune up the mc files. Mine is equipped with no 3), spam blocking feature (thanks to ordb.org) and antivirus scanner (thanks to aMaVis). Hope this helps Best Regards LIM GHEE LAM, CCNA ----- Original Message ----- From: "JasonTay" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, July 09, 2003 10:20 AM Subject: Mail relay > hi, > > i had experience the following:the following is some feedback from our vendor: > > We had try the following:on using a relay/spam tool from some website, we verified that we are able to relay through your mail server. > As such, we can safely conclude that the cause of the problem is linked to "other parties" using your smtp Server > as a "Relay Host > > Pls kindly advise on what solution should i use. > > thks > > -------------------------------------------------------------------------- - > Evaluating SSL VPNs' Consider NEOTERIS, chosen as leader by top analysts! > The Gartner Group just put Neoteris in the top of its Magic Quadrant, > while InStat has confirmed Neoteris as the leader in marketshare. > > Find out why, and see how you can get plug-n-play secure remote access in > about an hour, with no client, server changes, or ongoing maintenance. > > Visit us at: http://www.neoteris.com/promos/sf-6-9.htm > -------------------------------------------------------------------------- -- > --------------------------------------------------------------------------- Evaluating SSL VPNs' Consider NEOTERIS, chosen as leader by top analysts! The Gartner Group just put Neoteris in the top of its Magic Quadrant, while InStat has confirmed Neoteris as the leader in marketshare. Find out why, and see how you can get plug-n-play secure remote access in about an hour, with no client, server changes, or ongoing maintenance. Visit us at: http://www.neoteris.com/promos/sf-6-9.htm ----------------------------------------------------------------------------
