Starting this morning, a number of our web service callouts started failing with an "Unexpected end of file from server" error.  I would say about 1 in 3 web service callouts fail with this error, while the others complete successfully.  We have not made any recent changes to our code, nor to the web services being called.

In running wireshark traces, we found the below error messages.  Has anyone experienced this before or have any thoughts on the cause/solution?

TLS alert error messages
Alert message 21 – decryption failed Reserved (21).

Starting this morning, a number of our web service callouts started failing with an "Unexpected end of file from server" error.  I would say about 1 in 3 web service callouts fail with this error, while the others complete successfully.  We have not made any recent changes to our code, nor to the web services being called.

In running wireshark traces, we found the below error messages.  Has anyone experienced this before or have any thoughts on the cause/solution?

TLS alert error messages
Alert message 21 – decryption failed Reserved (21).