While configuring an IMAP connection, the application attempts to contact desired server using IMAP protocol. To connect properly to an IMAP server the program needs the following information:
- Host name, provided either as a IP address (e.g. 188.8.131.52) or public name (e.g. ftp.example.com)
- Port, under which the IMAP service is running on server
- Encryption preference, which determines if the application would use secure layer (SSL) for the connection
It might happen that the connection could not be established properly for some reason. Please study list of most common connection issues:
- No such host is known - this problem encounters if your machine is unable to contact chosen server. Please double check if the DNS you are using is able to resolve the provided hostname. Otherwise, you may use the IP address.
- A connection attempt failed because the connected party did not properly respond after a period of time (...) - it means that software was unable to reach the chosen server as no answer was sent. Please double check if the traffic is not limited by any security solution and if the port is set properly.
- The remote certificate is invalid according to the validation procedure - it means that the software is unable to confirm the remote certificate. Please check date and time settings, as most probably the date is improperly set.