Currently it seems to only be able to send mail with from-address defaulting to the apache2 / sendmail from-address (i.e. apache2 user = www-data).
Is it possible to:
Change this into a more useful from-address?
Use the survey administrator name and address for this?
Since letting LimeSurvey managing the invitations is such a nice feature I can't believe I didn't overlook the solution to this issue. Appologies in advance, however despite searching the fora I couldn't find a solution.