"421 service not available closing channel" error
I was trying to send emails to my localhost account in Windows Live Mail and it's giving me an error message "421 service not available closing channel". This is nothing to do with the email client. This is an issue in xampp's MercuryMail folder. I am using XAMPP 1.8.3 and it appears MercuryMail seems to have "QUEUE" folder missing. Place a "QUEUE" folder inside MercuryMail as in "C:\xampp1.8.3\MercuryMail\QUEUE" and this problem goes away. The same path for the QUEUE folder should be used in the "Mail queue" tab in Mercury's Configuration > Mercury Core Module Configuration.