Having constant issues with declude leaving behind orphaned .hdr files, logs complaining of missing .hdr files or unable to write to them. It also leaves .eml files in the SmarterMail spool root that have no matching .hdr files, I have to manually move them to the drop folder to get them to process.
When declude complains about not being able to write to the .hdr, SmarterMail ignores the spam scoring and passes it as an "Authenticated" email.
The only realtime scanner is Windows Defender, however the C:\SmarterMail and C:\Program Files (x86)\SmarterTools\SmarterMail directory (including the mail storage drive) are excluded. So this does not appear to be the issue. Disable the declude virus.cfg file by renaming it and still get these random write errors.
Also see errors like...
07/28/2017 13:08:16.770 258560588087 1 [1 of 2 not deleted] files were deleted. You should not use an on-access virus scanner that scans the \IMail directory or sub-directories.
in the virxxxx logs, No idea why it is saying anything about IMail. Any other Declude users seeing errors in their decxxxx.log files about failing to write .hdr files?