I am able to start courier-msa just fine on a new install, so whatever the problem is it is either something specific to upgrading from bookworm or to some setting on your system.
Your error message includes the following: "courier-msa.service: Can't open PID file '/run/courier/esmtpd-msa.pid' (yet?) after start: No such file or directory” Can you please post the output of “ls -la /run/courier”? -- Soren Stoutner [email protected]
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