- Go to http://spamcannibal.org/cannibal.cgi
- In the right side menu click Lookup IP
- Enter mail server IP address into the field and click Lookup IP
- Check why you got listed in the first place
- If your mail server is missing PTR (reverse DNS) record, add it
- If other problem resolve it first
- If the problem is resolved go again to http://spamcannibal.org/cannibal.cgi
- Click Contact in the right side menu
- Scroll to the bottom
- Enter your IP address
- Enter your Email
- Describe why you got listed and what you did to solve the problem
- Submit
For some reason you might want to change default SMTP port number 25 Exchange 2007 is using. Exchange 2007 uses RECEIVE AND SEND connectors, one for receiving mails and other for sending mails (obviously ;) So you need to change ports on those connectors. I will not say those two, because you might be using more than two. You change Receive connector port by opening the connector properties in Exchange Management Console --> Hub Transport --> RECEIVECONNECTORNAME --> Properties --> Network --> Local IP Addresses (Edit Receive Connector Binding) Just to clarify what "Local IP Addresses" and "Remote Servers" are (from Exchange 2007 help), because I find it little bit confusing: Use these local IP Addresses to receive mail Use this list to specify the IP addresses and port numbers on which this Receive connector listens for incoming mail. Receive mail from remote servers which have these IP addresses Use this list to specify the
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