The Ehlo options for the client proxy target %1 did not match while setting up proxy for user %2 on inbound session %3. The ...

The Ehlo options for the client proxy target %1 did not match while setting up proxy for user %2 on inbound session %3. The mismatched settings might cause some messages to get rejected. Continue with proxying even though there is a mismatch. The critical non-matching options were %4. The non-critical non-matching options were %5.