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Configure your firewall to accept Email Security e-mails

Important

This step is recommended only for On Premises mail servers.

The next step is to ensure that your firewall is configured to allow e-mails to be delivered from the GravityZone Security for Email servers after it has been filtered.

You should add firewall rule entries to allow the following IP addresses to connect from the public Internet to your mail server on port 25:

Important

There are three sets of IP addresses:

  • Set 1 - use this if your GravityZone is provisioned with https://cloudgz.gravityzone.bitdefender.com/

  • Set 2 - use this if your GravityZone is provisioned with https://cloud.gravityzone.bitdefender.com/

  • Set 3 - use this if your GravityZone is provisioned with https://cloudap.gravityzone.bitdefender.com/

You can check how you are provisioned by logging in to the GravityZone console and checking the URL.

Set 1 (IP addresses)

The following IP addresses and ranges are used by GravityZone Security for Email 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:

51.140.50.9
23.97.185.122
52.28.195.233
104.40.205.111
52.28.207.52
46.137.91.239
46.51.191.66
46.51.184.151
52.29.103.252
40.115.45.200
40.115.43.250

Note

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

Set 2 (IP addresses)

The following IP addresses and ranges are used by GravityZone Security for Email 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:

104.214.75.142
52.200.11.158
104.214.75.99
52.200.119.29
52.161.96.58

Note

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

Set 3 (IP addresses)

The following IP addresses and ranges are used by GravityZone Security for Email 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:

104.214.75.142
52.200.11.158
104.214.75.99
52.200.119.29
52.161.96.58

Note

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

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