Hello Rolf,

Thank you for the suggestion, it was related to the TCP/IP timeout. I started at 90 seconds and changed to 120 which has resolved this issue. I have been dealing with it for a long time and decided to ask, glad I did. Thank you.

Stephen 

I have been using Mercury for many years and I have always had a problem with receiving of emails completely in my iOS devices over IMAP. If I use Thunderbird, it will download the complete content of the emails and in the iOS devices it will only retrieve the headers close to half of the time. When you select any of the emails that are not there on the iOS devices, it will sit with the spinning wheel and most of the time not complete the retrieval. On the same iOS devices it will retrieve the emails from our company Office365 server and also from Gmail with all the content. It is only on some from the Mercury connection. I am using SSL on port 993 as the connection method and it does not have a problem connecting. For any of the emails that will not complete, if I connect with Thunderbird or Pegasus, they load without any problem. I wanted to see if anyone else has seen this and how (if) you have resolved it.

I'm not sure if the logs or something would help best to find the root cause to the problem. Looking for some help.

Thank you. 

Make sure you are running the current version of Mercury (4.80) and try increasing the TCP/IP timeout in MercuryI configuration to see if that helps. If not try to switch on session logging temporarily for MercuryI until you get a log for a failed connection that you can post here.