diff -ru portage-2.2.12.orig/pym/portage/mail.py portage-2.2.12/pym/portage/mail.py
--- portage-2.2.12.orig/pym/portage/mail.py	2014-08-12 20:30:01.000000000 +0200
+++ portage-2.2.12/pym/portage/mail.py	2014-08-23 21:36:13.067615846 +0200
@@ -49,6 +49,7 @@
 	from email.header import Header
 	from email.mime.base import MIMEBase as BaseMessage
 	from email.mime.multipart import MIMEMultipart as MultipartMessage
+	from email.utils import formatdate
 
 	if sys.hexversion < 0x3000000:
 		sender = _unicode_encode(sender,
@@ -91,7 +92,7 @@
 	#    input_bytes = s.encode(input_charset, errors)
 	#UnicodeEncodeError: 'ascii' codec can't encode characters in position 0-9: ordinal not in range(128)
 	mymessage["Subject"] = Header(_force_ascii_if_necessary(subject))
-	mymessage["Date"] = time.strftime("%a, %d %b %Y %H:%M:%S %z")
+	mymessage["Date"] = formatdate(localtime=True)
 	
 	return mymessage