Plesk courier-imap imapd on port 143 fails

After Plesk upgrade to 9.5.4, imapd on port 143 did not come up.

On checking the maillog, it was complaining about:

imapd: Invalid -maxprocsarg option.
imapd-ssl: Invalid -maxprocsarg option.

I noticed /etc/courier-imap/imapd had both the below lines commented:


Once I uncommented those values, I was able to get the imap listener up upon a `service courier-imap restart`.

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