Uppercase SMTP extension capability strings before matching to work with Outlook.com
Uppercase SMTP extension capability strings before matching to work with Outlook.com

dsbenghe/MailKit,FubarDevelopment/MailKit,mganss/MailKit,matt2003/MailKit,eino-makitalo/MailKit,jamie-dainton/MailKit,nachocove/MailKit,sstraus/MailKit,jstedfast/MailKit