21 May
                
                    2018
                
            
            
                21 May
                
                '18
                
            
            
            
        
    
                7:09 p.m.
            
        Just wondering if there is an easy way to have dovecot do a blacklist lookup as a negative authentication so that if the IP is on a blacklist then authentification fails even if they get the password right.
If this works I have a blacklist everyone can use.