upgrade pykolab-0.5.14 to 0.5.15

[Thomas Spuhler]

I am trying to upgrade pykolab-0.5.14 to 0.5.15, but I am running into problems.
I cannot send e-mails anymore with a message of a submission problem.
Is there anything that needs to be changed after the upgrade?

-- 
Best regards
Thomas Spuhler
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