Postfox Error - Mail in Queue

[Andrew_Pa]

In my server, I have many domains. Two of them cannot receive emails. All their emails stay in the queue.

The message I take from the maillog is the following

...relay=plesk_virtual, delay=2457, delays=2457/0.02/0/0.02, dsn=4.3.0, status=deferred (temporary failure. Command output: fork_execv: execv("/usr/sbin/sendmail") failed: Exec format error 4.2.1 Message can not be delivered at this time

Can anyone have an idea how can I fix it?

The /usr/local/psa/admin/sbin/mchk --with-spam , doesn't solve my problem.

Thank you