MX records and IP addresses for non-EU customers
This article lists the
MX records and IP addresses used by the Cloud USS E-mail Security service.
MX RECORDS (Inbound)
You should use the following MX records.
Smart Hosts (Outbound)
You should use the following smart hosts for outbound e-mail. Port
25 and 587 are available for outbound email.
The following IP addresses and ranges are used by E-mail 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:
If you use an SPF record for your domain, it should be updated to include the following:
-allin your SPF record could mean that the remote domain will reject your email if the TTL has not expired.