Hi, Dmitriy -
Jeremy's already answered saying it's not possible to change the file
extension. I'll chip in with my usual waving of a warning flag to say you
need to be very careful when thinking about altering the headers and/or
content of a message (which includes its attachments) and the message is
digitally signed with DKIM.
If you had managed to find a way of changing the filename you would have
invalidated any DKIM signature the message might have. OK, so this isn't a
problem if the message is genuinely spam, but if there's a chance it might
be legitimate you'll have just broken its authentication.
Cheers,
Mike B-)
--
Systems Administrator & Change Manager
IT Services, University of York, Heslington, York YO10 5DD, UK
Tel: +44-(0)1904-323811
Web:
www.york.ac.uk/it-services
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www.york.ac.uk/docs/disclaimer/email.htm
