Go the the smtp server properties and there is a button relay. First of all choose no one except the lsit below. And make the lists of ip's you want them to relay on your server. Regards Robert Abela robert@xxxxxxx -----Original Message----- From: Oluwaseyi Owoeye [mailto:OOwoeye@xxxxxxxxxxxxxxxxxx] Sent: Thursday, February 21, 2002 3:47 PM To: [ExchangeList] Subject: [exchangelist] Stopping mail relaying http://www.MSExchange.org/ . Hi Guys, I have a major problem over here. I am presently using Exchange server 2000 and I noticed that people are able to telnet into my port 25 and use my server as a relay. I tried setting the configuration on the smtp virtual server but it was all to no avail. Please could anyone guide me on what to do so as to stop mail relaying on my server. The configurations on the smtp virtual server are quite tricky. Thanks for your help Seyi ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: robert@xxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') GFI - Security & communications products for Windows NT/2000 http://www.gfi.com ********************************************************** This mail was content checked for malicious code or viruses by Mail essentials. Mail essentials for Exchange/SMTP is an email security, content checking & anti-virus gateway that removes all types of email-borne threats before they can affect your email users. Spam, viruses, dangerous attachments & offensive content can be removed before they reach your mail server. In addition it has server-based email encryption, disclaimers and other email features. *********************************************************** In addition to Mail essentials, GFI also produces the FAXmaker fax server product range & LANguard internet access control & intrusion detection. For more information on our products please visit http://www.gfi.com