Unfortunately the log retention period is global for all channels.
One option to maintain different retention periods would be to install multiple Iguana instances on your server, with the PDFs handled by one instance (and a short retention setting) while the remainder of the interfaces are hosted on the other instance (with a longer retention setting). Each instance would have its own log files. You’d need to work out the licensing details with Interfaceware, but it’s very doable.
Are both the source and destination(s) for these PDFs HL7 v2.x, with a base64-encoded PDF payload in one or more OBX segments?
Jeff Drumm ◊ VP and COO ◊ HICG, LLC. ◊ http://www.hicgrp.com