<DKIM> Gmail Label Sync - Label Header Duplication Issue

Nicolas Sebrecht nicolas.s-dev at laposte.net
Wed Nov 19 22:44:01 GMT 2014

On Wed, Nov 19, 2014 at 11:55:36AM -0800, Ethan Schoonover wrote:

> Offlineimap may create multiple headers recording the gmail labels
> when a message is refiled remotely on the gmail server. The last of
> these is always the correct header, but upon any subsequent scan of
> the message due to mtime change, offlineimap will read in only the
> first header, resulting in an incorrect relabeling of the message.
> Thus the issue is that, in a multiple-label-header condition,
> offlineimap writes to a new header at the end of the header sequence,
> but subsequently reads from the first label-header available.
> Offlineimap should either NOT create multiple label headers or should
> consistently read write to the same (either first or last) label
> header.
> The state of the headers (X-Keywords in this case) is shown in each step below:

Very nice analysis Ethan. I hope someone will fix this!

Nicolas Sebrecht

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