fix date to conform to rfc822

[hykw]

The date header which conforms to RFC822 have to use Jan, Feb, ... for the month. In some MUA, Thunderbird for instance, cannot correctly parse the date which doesn't conforms to RFC822.

[antp]

From my reading of RFC833 the format string is incorrect as the %m will return the month in numerical format and the RFC states it needs to be a short month (%b).

As the formatting is supplied by the Timex module it would suggest that this should be raised against Timex.

Have I missed anything?

[hykw]

As the formatting is supplied by the Timex module it would suggest that this should be raised against Timex.

I'm afraid I don't understand what you mean, due to my English skill, anyway replacing %m' with%b`, like below, would also be good

Timex.format!(date, "%a, %d %b %Y %T %z", :strftime)