Catch exceptions thrown by DateTimeOffset .ctor if day/month/etc are out of range
Catch exceptions thrown by DateTimeOffset .ctor if day/month/etc are out of range

Fixes https://github.com/jstedfast/MailKit/issues/254

nachocove/MimeKit,jstedfast/MimeKit,jstedfast/MimeKit,jstedfast/MimeKit,nachocove/MimeKit,nachocove/MimeKit