The source code is available via anonymous ftp from ftp.ee.duke.edu in the directory /pub/SciComp/src/. This location is subject to change without notice. If you cannot find it in the above directory, send email to the address shown below.
All bug reports should be mailed to the PMTA support mailing list, pmta@ee.duke.edu.
Note that this is research code and support for bug fixes and enhancements cannot be guaranteed in a timely manner.