17 Aug
                
                    2011
                
            
            
                17 Aug
                
                '11
                
            
            
            
        
    
                4:05 p.m.
            
        On 17/08/2011 16:00, Alexandre Chapellon wrote:
Is there any way to achieve this with dovecot? Does anybody have another idea smoothly force used to switch to TLS?
Hi,
Maybe by sending them an email with a deadline for the end of clear text auth support ?
If they don't amend their setup they'll be unable to retrieve their emails.
Should you want to go the "nicer" way, you could throttle bandwidth to port 110/143 provided you use those for insecure connections.