Email spoofing the "From" address

Support General Configuration
1

Hello!

I can’t figure out if I can create a rule to prevent spoofing of the mail from: name

To ensure that the “From” address matches the SASL username for authenticated users, which helps prevent email spoofing

Thanks!

2

Hello,

There are 2 Authentication related actions that you may use into the Acceptance / Routing Rules created via WebAdmin > Security & Filtering > Acceptance & Routing > Advance Settings:
+ Authenticate mail from
+ Authenticate mail header from

Usually these rules are good to be set on your server so your authenticated users are not trying to fool the system (by sending a message in the name of another account that has not allowed this action).

However please do not forget about SPF, DKIM and DMARC so your messages that leave your server are the only trusted ones.

HTH,
Ioan

3

Just super, thank you for pointing out the correct settings, everything is very simple - you just needed to add + Authenticate mail header from and everything works correctly, thank you!