Very slow when digitally signed

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Dan Schuelke

New Member
Outlook version
Outlook 2016 for Mac
Email Account
Exchange Server 2010
Hello, I use Outlook 365 for Mac. I am on a 2010 exchange server.
Exchange Client Access server .NET Framework version: 2.0.50727.5485
Client Access server operating system version: Microsoft Windows NT 6.1.7601 Service Pack 1
Client Access server operating system language: en-US
Client Access server version:
Client Access server language: en-US
Client Access server time zone: ‎(UTC-08:00)‎ Pacific Time ‎(US & Canada)‎
Client Access server platform: 64bit
Mailbox server Microsoft Exchange version:

Since November, when ever I receive an email from a govt. customer who has a digitally signed email, it takes up to 2 minutes for the email to open. If I go online and use Outlook Web App (OWA) the response to open these emails is instant. I have no problems whatsoever to open any other email. Any input would be great.
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