The "Date:" header in sent mail is created in sendmail.inc with date('r'), but that will always make the Date: field in server timezone format. Result is to make some mail clients miss-display sent mail.
That header should be formatted using the local user's timezone and not the server's. Can someone help and let me know what that call should be to pickup the user timezone pref and make it display in that format (as well as RFC 2822).
Thanks!