2 ms·
Banning everyone who has a different RCPT TO: and To: would be enough.
by justsomehnguy 4y ago
Banning everyone who has a different RCPT TO: and To: would be enough.
- Avamander 4y agoThis is intentionally allowed and very frequent. It's not a thing anyone could realistically change. However, one Microsoft's patent expires, we could enforce "SPFv3" on both.
- justsomehnguy 4y agoI don't see where different RCPT/To should matter. Mailing list expansion happens on the mail server, not in the client.