If the answer is "security", point out that according to the JES2xxx Concepts and Facilities manual, SSL is supported. Then tell them: "The most current release is 4.8.1 and we just need up upgrade."

If the answer is "It Costs Money". then you will have to start building a Business Case for FTP versus FAX or hand delivery of paper through the interoffice mail or whatever other method the OWSN wants you to use as a replacement.

Talk to the End User folks; tell them what is going on and get them on board. They can build the argument about the costs of changing their Process and Retraining. And it WILL over-shadow the cost of the software -- People are expensive, Bits are cheap in comparison.

With the hard figures in hand, the User Manager(s) can go bashing about up the Management Chain and let it come down on the head of the OWSN. There is nothing like getting called into the CFO's office to explain why saving $1500 per year in the IT budget at the cost to the Company of between $10K and $30k is such a good idea.