To connect to ActiveFax through a firewall, the ports 25017, 25018 and 25019 need to be open for TCP and UDP protocol.
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Cornelia Wegmueller, ACTIVEFAX Customer Support
INTERTRADE ENTERPRISES LTD :: Blegistr.25 :: CH-6340 Baar/Switzerland
Phone: +41 44 5866974
Fax: +41 44 2742350
mailto:support@activefax-distribution.com
http://www.activefax-distribution.com