MX records and IP addresses for USA customers

This section contains the lists of MX records and IP addresses used by Email Security.


Your Email Security product license must be provisioned in the USA region in order to use the details contained in this article.

MX RECORDS (Inbound)

You should use the following MX records:

Hostname                      Priority
mail3.us.scanscope.net        10
mail1.us.scanscope.net        20
mail2.us.scanscope.net        30


You should always reference these records by their DNS name rather than IP address.

Smart Hosts (Outbound)

You should use the following smart hosts for outbound e-mail:

Country    Hostname                   Cost
All        smtp1.us.scanscope.net     10 
All        smtp2.us.scanscope.net     10


Port 25 and 587 can be used for sending outbound email.

IP Addresses

The following IP addresses and ranges are used by Email Security to deliver email to your server. Mail delivery operates on the standard SMTP port of 25. Please make sure your firewall and/or email server is configured to accept connections from these IP addresses:


Be sure to use the actual IP addresses in your firewall, rather than hostnames.

SPF Record

If you use an SPF record for your domain, it should be updated to include the following:



It is recommended that outbound email only be enabled after the Time to Live (TTL) for the SPF record has passed. The use of -all in your SPF record could mean that the remote domain will reject your email if the TTL has not expired.