Open Transport strictly enforces this requirement in versions prior to 1.0.7. Sources for mdev software will vary, as some of the noted products are commercial and some are shareware or public domain. 538-9696 to locate an Apple authorized reseller near you. There have been reports of problems with Open Transport, PPP, and the use of Virtual Memory. Open Transport fully supports the use of virtual memory.
Current plans call for an update to FreePPP to be available once a fix is determined.
In the interim, users who experience problems with PPP and Virtual Memory are advised to turn VM off. Apple is developing an implementation of PPP for Open Transport as a part of the next generation of Apple Remote Access products. This software provides the MacOS with built-in support for Internet SMTP mail.