Using DNN 7.1.2.  I've set up an SMTP server and now setting up the information in the SMTP section in the Host settings.  When I hit the Test SMTP button, i get the error:  Input string was not in a correct format.  Done a lot of searching, seen this error a lot, but nothing related to emailing and SMTP testing.  If i try to reset a password, it also registers the error - not really surprising since the test doesn't work.  Any help would be appreciated.  Thank you.