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[thierry90]

Describe the bug
A clear and concise description of what the bug is.

Platform (please complete the following information):

• OS: [e.g. Windows, Linux, MacOS, iOS, Android, Windows Phone, etc.]
• .NET Runtime: [e.g. CoreCLR, Mono]
• .NET Framework: [e.g. .Net Core, .NET 4.5, UWP, etc.]
• MailKit Version:

Exception
If you got an exception, please include the exception Message and StackTrace.

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
A clear and concise description of what you expected to happen.

Code Snippets
If applicable, add code snippets to help explain your problem.

// Add your code snippet here.

Protocol Logs
Please include a protocol log (scrubbed of any authentication data), especially
if you got an exception such as Syntax error in XYZ. Unexpected token: ....

To get a protocol log, follow one of the following code snippets:

// log to a file called 'imap.log'
var client = new ImapClient (new ProtocolLogger ("imap.log"));

// log to a file called 'pop3.log'
var client = new Pop3Client (new ProtocolLogger ("pop3.log"));

// log to a file called 'smtp.log'
var client = new SmtpClient (new ProtocolLogger ("smtp.log"));

Note: if the protocol log contains sensitive information, feel free to email it to me at
jestedfa@microsoft.com instead of including it in the GitHub issue.

Additional context
Add any other context about the problem here.