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18.9 SecurityOptions no longer working

was reading and sending via imap / smtp just fine with my test outlook.com account up until I upgraded to 18.9 over the weekend.
now I get The specified value is not valid in the ‘SslProtocolType’ enumeration.
Parameter name: sslProtocolType

am using
client.SecurityOptions = Aspose.Email.Clients.SecurityOptions.SSLExplicit
has something changed that I need to add?


We were able to reproduce this issue and have logged it under ID “EMAILNET-39125” for further investigation. You will automatically be informed here once we have more information to share.


You may set up encryption protocols for specified instance like as given below:

client.SupportedEncryption = EncryptionProtocols.Tls12;

tried adding this where i specify the ssl SecurityOptions, no luck.
the next call client.ListFolders() hangs.
i get the timeout message:
Connection failure. Timeout ‘200000’ has been reached.
in my code i have: client.Timeout = 30000


We were unable to reproduce the issue that you reported. We used the code snippet given below for testing.

ImapClient imapClient = new ImapClient();
imapClient.Host = "imap-mail.outlook.com";
imapClient.Port = 993;
imapClient.Username = "Email";
imapClient.Password = "Password";
imapClient.SupportedEncryption = EncryptionProtocols.Tls12;
imapClient.SecurityOptions = SecurityOptions.SSLImplicit;

ImapMessageInfoCollection msgsColl = imapClient.ListMessages();
Console.WriteLine("Total Messages: " + msgsColl.Count);
ImapFolderInfoCollection folderColl = imapClient.ListFolders();
Console.WriteLine("Total Folders: " + folderColl.Count);

We hope that this fixed the issue that you were facing. Please feel free to reach us if further assistance is required.

changing from explicit to implicit fixed it.
i was under the impression tls required explicit.
for your test, specify a timeout and explicit, the timeout will not trigger.

thanks for the fix.


It is good to know that your issue has been resolved. If additional information is required, please free to contact us. We will be more than happy to assist you further.

The issues you have found earlier (filed as EMAILNET-39125) have been fixed in this update. This message was posted using BugNotificationTool from Downloads module by MuzammilKhan