Ich kann mir nicht vorstellen, dass dir dieser Auszug von IBM hilft, habe aber mehr nicht gefunden:
Your Domino R5 server has been crashing intermittently with an application error in NROUTER.EXE or NPOP3.EXE. On Windows NT, all of the RIP files have the same summary data.
The problem can occur with an application error in NPOP3.EXE also. The annotated RIP file indicates that the server crash was happening when the server was doing a CD to MIME conversion.
Solution
This issue was reported to Lotus Quality Engineering and has been addressed in Domino 5.0.3.
Excerpt from the Lotus Notes and Domino Release 5.0.3 QMR fix list
MIME - MIME to CD conversion
SPR# SMUN49KKBZ - Fix a crash that happened when the SMTP Router failed to correctly parse an unusual JPEG image file. [5.0.3]
MOD