I think I've found the problem.
I have LOTS of error logs on ClamD in the "Spam Checks" LOG:
[2024.02.29] 00:01:00.795 [8034139 ClamD Checks error: s:/SmarterMail/Spool/SubSpool0/8034139.eml: File path check failure: No such file or directory. ERRORs:/SmarterMail/Spool/SubSpool0/8034139.eml: File path check failure: No such file or directory. ERROR
[2024.02.29] 00:01:00.795 [8034184 ClamD Checks error: s:/SmarterMail/Spool/SubSpool5/8034184.eml: File path check failure: No such file or directory. ERRORs:/SmarterMail/Spool/SubSpool5/8034184.eml: File path check failure: No such file or directory. ERROR
[2024.02.29] 00:01:00.796 [8034129 ClamD Checks error: s:/SmarterMail/Spool/SubSpool0/8034129.eml: File path check failure: No such file or directory. ERRORs:/SmarterMail/Spool/SubSpool0/8034129.eml: File path check failure: No such file or directory. ERROR
[2024.02.29] 00:01:00.796 [8034113 ClamD Checks error: s:/SmarterMail/Spool/SubSpool4/8034113.eml: File path check failure: No such file or directory. ERRORs:/SmarterMail/Spool/SubSpool4/8034113.eml: File path check failure: No such file or directory. ERROR
[2024.02.29] 00:01:00.797 [8034161 ClamD Checks error: s:/SmarterMail/Spool/SubSpool2/8034161.eml: File path check failure: No such file or directory. ERRORs:/SmarterMail/Spool/SubSpool2/8034161.eml: File path check failure: No such file or directory. ERROR
[2024.02.29] 00:01:00.799 [8034100 ClamD Checks error: s:/SmarterMail/Spool/SubSpool1/8034100.eml: File path check failure: No such file or directory. ERRORs:/SmarterMail/Spool/SubSpool1/8034100.eml: File path check failure: No such file or directory. ERROR
[2024.02.29] 00:01:00.800 [8034130 ClamD Checks error: s:/SmarterMail/Spool/SubSpool1/8034130.eml: File path check failure: No such file or directory. ERRORs:/SmarterMail/Spool/SubSpool1/8034130.eml: File path check failure: No such file or directory. ERROR
[2024.02.29] 00:01:00.800 [8034150 ClamD Checks error: s:/SmarterMail/Spool/SubSpool1/8034150.eml: File path check failure: No such file or directory. ERRORs:/SmarterMail/Spool/SubSpool1/8034150.eml: File path check failure: No such file or directory. ERROR
[2024.02.29] 00:01:00.800 [8034133 ClamD Checks error: s:/SmarterMail/Spool/SubSpool4/8034133.eml: File path check failure: No such file or directory. ERRORs:/SmarterMail/Spool/SubSpool4/8034133.eml: File path check failure: No such file or directory. ERROR
[2024.02.29] 00:01:00.800 [8034095 ClamD Checks error: s:/SmarterMail/Spool/SubSpool6/8034095.eml: File path check failure: No such file or directory. ERRORs:/SmarterMail/Spool/SubSpool6/8034095.eml: File path check failure: No such file or directory. ERROR
[2024.02.29] 00:01:00.802 [8034186 ClamD Checks error: s:/SmarterMail/Spool/SubSpool7/8034186.eml: File path check failure: No such file or directory. ERRORs:/SmarterMail/Spool/SubSpool7/8034186.eml: File path check failure: No such file or directory. ERROR
What could this problem be due to?
How can I solve it?
P.S.:
this started immediately after the upgrade from 8804 (custom build) to the current 8818. Everything worked before.
Already tried restarting the server several times.