Valid DKIM signature

[deloptes <deloptes@gmail.com>]

It should have been more proper to start a new thread.

X-Amavis-Spam-Status: No, score=5.21 tagged_above=-10000 required=5.3
        tests=[DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1,
        FORGED_MUA_MOZILLA=2.309, FREEMAIL_ENVFROM_END_DIGIT=0.25,
        FREEMAIL_FROM=0.001, FREEMAIL_REPLYTO_END_DIGIT=0.25, HTML_MESSAGE=2,
        RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_SORBS_SPAM=0.5]
        autolearn=no autolearn_force=no

This is the reason why it passed. It was scored 5.21 while 5.3 was required
to flag it

DKIM_SIGNED=0.1 Message has a DKIM or DK signature, not necessarily valid
DKIM_VALID=-0.1 means it did not have at least one valid DKIM or DK
signature
DKIM_VALID_AU=-0.1 a valid DKIM or DK signature from author's domain

regards