[Citadel Support] Re: POP3 error in Thunderbird and Office Outlook

[IGnatius T Foobar]

 > Our Citadel server is working just fine... suddenly all users using   
 >thunderbird and outlook get this error ... POP3 mail server error. Any 
idea   
 >what causing this problem? Thanks   
   
 Unfortunately this is not enough information to perform troubleshooting.  
Have you tested to see whether port 110 on your Citadel server is 
reachable from your client machines?  Have you tried restarting Citadel 
and/or the server?