Why would one of our users being receiving IMAP sync errors, and how to correct?

This is probably a JR SmarterMail 101 question, but I just haven't been in this territory before:

We have a client that is getting 50 -80 sync errors per day (according to them, on their outlook)
'--------------
He continually get these errors when outlook tries to sync with our email server. Sometimes I get emails and sometimes I have to login directly to the server through the web. "

ERROR LOG

8:02:15 Synchronizer Version 16.0.7571.6534

8:02:15 Synchronizing Mailbox 'xxxxx@yyyyyyy.com'

8:02:15 Synchronizing Hierarchy

8:02:38 Error in folder 'PRODUCE DRIVE LIST'

8:02:38 [800CCCD2-0-0-733]

8:02:38 Terminated in error

8:02:38 [800CCCD2-0-0-733]

If y If you

8:02:15 Synchronizer Version 16.0.7571.6534

8:02:15 Synchronizing Mailbox 'dcharron@bellsmusicshop.com'

8:02:15 Synchronizing Hierarchy

8:02:38 Error in folder 'BAND DRIVE LIST'

8:02:38 [800CCCD2-0-0-733]

8:02:38 Terminated in error

8:02:38 [800CCCD2-0-0-733]

'========================

How do I correct or determine the error issue??? I turned on the details log.. and I can see the imap details, but it is not reporting any errors on our side. They are using
Windows 10 pro, outlook 2016, single computer, no other devices

Bruce Barnes Replied

1/14/2017 at 5:39 AM

This has been repeatedly discussed in these forms, so I'm only going to say this once, and not argue with you, or anyone else. Install on a 64 bit server operating system, and make,certain all .NET 4.5 updatea and patches, even the,elective .NET 4.5,patches are enabled. Update your security registry to block all DNS - now depreciated, and no longer allowed, and ENABLE TLS 1.0, 1.1, and 1.2 - per my instructions at https://portal.chicagonettech.com. Everything you'll need is there. Disabled the SmarterMail web server, and install Microsoft IIS, preferably with an SSL certificate. There are a lmited number of ports on standard OSs, and both IIS, POP, SMTP, and IMAP keep multiple ports open, for long periods of time.

Bruce Barnes ChicagoNetTech Inc brucecnt@comcast.net Phonr: (773) 491-9019 Phone: (224) 444-0169 E-Mail and DNS Security Specialist Network Security Specialist Customer Service Portal: https://portal.chicagonettech.com Website: https://www.ChicagoNetTech.com Security Blog: http://networkbastion.blogspot.com/ Web and E-Mail Hosting, E-Mail Security and Consulting

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