I've a NLB frontend-backend Cluster exchange topology.
Im trying to configure IMAP accounts to connect to the frontend which will forward it to the backend.
It doesnt work. Cant authenticate. I've enabled maximum IMAP logging and it appears this events:
- IMAP4SVC - Authentication - 1011 (Authentication attempt from <IP> to <EMAIL> has failed with error 0x3b.)
- IMAP4SVC - Connection - 1016 (IMAP4 proxy connection to PROEXC00.bilbokoudala.lan for bilbokoudala/jsomoza (mailbox jsomoza) failed with error 0x3b.)
If i configure the account to connect directly to the backend, it works.