3 ms·
Hm, strato, 1and1 and t-online only have one mx and spf record for all customers. Allowing you to send as anyone they have in their system and make it look auth
by Asmod4n 5y ago
Hm, strato, 1and1 and t-online only have one mx and spf record for all customers. Allowing you to send as anyone they have in their system and make it look authentic.
- pbhjpbhj 5y agoSurely they can cut off emails before it reaches the SMTP server though? Don't they have a milter that drops email sent by accounts that don't have the domain registered? They don't really forward spoofed mail do they??
- Asmod4n 5y agoThey do, they only check if you are allowed to log in. Exchange even has a feature built in for exactly this, their send connectors can’t store more than one account.