Received header not used when Date header is missing

[memoryhole]

Some email systems (such as the NYTimes.com email-article-to-a-friend service, and iTunes weekly mailings) do not have Date headers (an RFC nonconformity which is not corrected by qmail servers). Most mail reader programs compensate for emails that don't have Date headers by using the timestamp on the first Received header when the Date header is missing. Roundcube doesn't, and so emails without Date headers are sorted with a null date, so the show up in unexpected places in the lists of emails sorted by date.

[memoryhole]

A fix for the display problem. Extracts the date field from the first-added Received header.

[thomasb]

We have to check carefully if INTERNALDATE always works for sorting.

[thomasb]

Also fetching the Received header causes a much higher data load. And this only to display non-conform mails. I don't know if this is worth it...

[memoryhole]

Replying to thomasb:

Also fetching the Received header causes a much higher data load. And this only to display non-conform mails. I don't know if this is worth it...

Perhaps it would be better to only fetch the Received headers for messages without Date headers?

[till]

Committed bad_date_display.patch in r1049.

I will split the 2nd patch into a feature request and delay it.

[till]

Closing this, feature request in #1484769 (delayed to 0.1.1).

@memoryhole: Thanks for the patch, please reopen if this doesn't work!

[till]

Re-opened to revise the patch. ;-)

[till]

Revision r1053 is my attempt to make it better, but it's not working yet - not sure why.

[till]

Fixed by thomasb in r1054! Thanks!