We're using the Chilkat Mail ActiveX component, version 184.108.40.206 to send an email via SMTP. The server requires SSL and a connection on port 465.
On one specific client computer, running Server 2008 R2, they receive the following error when they try to send an email. Failed to read SChannel response (4)
On our test machines, using Windows 8, the component works fine. We have used the clients SMTP credentials and server, and we can send emails. The client also has Outlook on their computer and that can send emails using SMTP with the same credentials.
We can't figure out what is different between our environment and theirs, and the source of this error.
The component is being used in a Visual Foxpro 9 SP2 application.
We're using the Chilkat Mail ActiveX component, version 220.127.116.11
That sounds like a very old version of the component. You may want to upgrade to the latest version (upgrades are free) to see if that helps.