Verifying Connecting IP Address

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    Many mail servers, even those with an external IP address, route mail through a firewall or proxy server. From the perspective of Axcess' servers, the firewall or proxy IP address is connecting to Axcess, not the other mail server. If you are unsure whether you are sending through a firewall or proxy server, the following test will show the path of any mail that leaves your system.

    Automatic Test Process:

    Send an email to   You will receive a response from  The response will contain the IP address that connects to Axcess Internet.

    Manual Process:

    Send an e-mail to an account outside your own domain.

    View the full header of the e-mail as received by the external account. You will see a series of lines beginning with the word Received: For example,

    Received: from (EHLO ( by with SMTP; Sat, 23 Aug 2003 12:43:16 -0700
    Received: (from 
    send@localhost ) by (8.8.5/8.8.5) id MAA14276; Sat, 23 Aug 2003 12:43:19 -0700

    In this example is the IP address of the server that connected to the external mail server, even though the mail originated elsewhere. Should you find out that you have been connecting through a firewall or proxy server, please run a Reverse DNS check and the Manual Telnet tests again using the IP address of the firewall or proxy connecting to Axcess' mail servers.

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