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That makes sense, and yes, working to get confirmation on appliance info. It's been a bit fragmented and networking person has been gone mostly :(
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That makes sense, and yes, working to get confirmation on appliance info. It's been a bit fragmented and networking person has been gone mostly :(

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I've got a Proofpoint appliance setup and IP for it is in the DMZ. <br />
I am wondering besides the ports needed open on the Proofpoint appliance (as far as connecting to management console from an internal IP), are there typically other ports/connections that need to be allowed between the smarthost in the DMZ and the internal Exchange servers? Exchange 2010 and 2007 mix is environment I have.
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I've got a Proofpoint appliance setup and IP for it is in the DMZ. 
I am wondering besides the ports needed open on the Proofpoint appliance (as far as connecting to management console from an internal IP), are there typically other ports/connections that need to be allowed between the smarthost in the DMZ and the internal Exchange servers? Exchange 2010 and 2007 mix is environment I have.

Exchange smarthost in DMZ - what ports to open up?

Various techniques are used to prevent email spam (unsolicited bulk email). No technique is a complete solution to the spam problem, and each has trade-offs between incorrectly rejecting legitimate email (false positives) vs. not rejecting all spam (false negatives) - and the associated costs in time and effort. Anti-spam techniques can be broken into four broad categories: those that require actions by individuals, those that can be automated by email administrators, those that can be automated by email senders and those employed by researchers and law enforcement officials.

AntiSpam

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.

Email Servers

Software firewalls, also known as host-based firewalls, provide a layer of software on one host that controls network traffic in and out of that single machine. Most operating systems now include firewall software, but many available software firewalls include central distribution, antivirus systems and disaster recovery.