Sometimes RightFAX is not perfect, and will sometimes not convert a file correctly.  This can lead to creating a very large fax (over 100 pages) that will be stuck sending out of your server.  No one wants this, it costs money and annoys the recipient of said fax.  Here is how you would go about limiting the amount of pages that RightFAX can send:

1) Enterprize Fax Manager

2) Click on Doctransport Service

3) Click Configure Brooktrout

4) Click BT Call Parameters

5) click Show Advanced

6) Maximum Number of Pages change

Once this number is set, anything over that amount would not be able to be sent out of that server.