Added a workaround for smtp.strato.de's blatant disregard for standards
Added a workaround for smtp.strato.de's blatant disregard for standards

Fixes issue #162

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