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Joey
New Contributor

MXToolBox - SMTP Open Relay

Dears,

 

Hope all is well, I got a warning on MXToolBox stating that my FortiMail might be an Open Relay, so I've enabled Recipient Address Verification to fix it and confirmed it's working by sending an email to a fake email address for the protected domain and a reject was triggered by Recipient Address Verification.

 

I opened MXToolBox and I can still see a warning for SMTP Open Relay.

 

 

Am I missing anything?

 

Thank you

3 REPLIES 3
Bromont_FTNT
Staff
Staff

This would be under access control rules...   Policy ---> Access Control

 

You'd need a policy in there to allow outbound mail flow, but you should make sure it's locked by IP to your internal mail server.  

Joey

Bromont wrote:

This would be under access control rules...   Policy ---> Access Control

 

You'd need a policy in there to allow outbound mail flow, but you should make sure it's locked by IP to your internal mail server.  

Thank you Bromont, will try it out and revert back.

Fullmoon
Contributor III

Policy ---> Access Control-->avoid defining 0.0.0.0/ but rather define your email server private address.

Fortigate Newbie

Fortigate Newbie
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