Thanks Jeff. I'm assuming this is based on the fact that the SMTP port is open and available to anyone outside of the organization using the server? What they have going on is they're using the Exchange Internet Mail Service for outgoing mail only (it's handed off to their ISP via SMTP). Incoming mail is coming in via an application they're using known as POPCon...it basically grabs all their email they have forwarded to a POP3 email box, and then hands it off to the Exchange Server internally via SMTP. The SMTP TCP/IP port is not accessible outside of their LAN since it is blocked by the router. What I'm thinking is they should be relatively safe with the exception of someone internally sending spam through the Exchange Server. It's kind of a hokey way that they have things setup, but it works for them and they really don't want to change anything. So I'm just doing some research into what I need to do to secure the site as much as possible without eating into their budget too terribly much and with as few changes as possible. Appreciate you response. Regards, Chris chris@xxxxxxxxxxxxxxxxxxxxxxxxx -----Original Message----- From: Jeffrey Robillard [mailto:jrobill@xxxxxxxxxxxxx] Sent: Thursday, January 03, 2002 9:52 AM To: [ExchangeList] Subject: [exchangelist] RE: Exchange Server 5 http://www.MSExchange.org/ One of the huge problems with exchange server 5, which makes it worth the investment really, is that it has no spam blocking filters. If you go to websites about spam and find out how to make exchange server 5 do spam blocking the recommended option is "replacement". If you go to exchange 5.5, which the upgrade wizard seemed pretty capable, keep in mind that to upgrade the information store you will need free space greater than that of the info store itself. If your info store is 10gb you will need like 20gb free to do the upgrade or it will just puke half way through. Also, you cant go straight from 5 to 2000. -----Original Message----- From: Chris Thompson [mailto:chris@xxxxxxxxxxxxxxxxxxxxxxxxx] Sent: Thursday, January 03, 2002 12:18 PM To: [ExchangeList] Subject: [exchangelist] Exchange Server 5 http://www.MSExchange.org/ I just recently inherited a site with a couple of NT 4 Servers and an Exchange 5 server. It's been a while since I've had to maintain an Exchange Server...come to think of it, I haven't even laid hands on an Exchange Server since about 1997. I seem to be able to find very little reference to Exchange Server 5 on the Internet. There seems to be a good deal of information on Exchange Server 5.5 and 2000. Is there an upgrade path from 5 to 5.5 that doesn't involve a significant investment (times are tough)? And what would the benefit be in upgrading the Exchange Server? This organization is using this single Exchange Server in a small business setting with about 20 clients for internal email as well as SMTP Internet email. Thanks for your advice. Regards, Chris Thompson chris@xxxxxxxxxxxxxxxxxxxxxxxxx ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: jrobill@xxxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: chris@xxxxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')