Error: Set default component failed: defpackagemng failed: Loaded Postoffice Configuration Provider (MEAIPO.DLL)
Unable to assign port to IP address. Reason: Unknown IP Address: 124.150.141.22

Follow the below given steps to solve this issue :

1. Go to Regedit.
2. Go to the path: Local_Machhine >> Software >> Wow6432Node >> Plesk >> Psa config >> config 
3. Locate the record MAIL_PROVIDERW_DLL and change it to: C:\Program Files (x86)\Parallels\Plesk\admin\bin\smartermailprovider.dll
4. Locate the path: Local_Machhine >> Software >> Wow6432Node >> Plesk >> Psa config >> config >> Packages >> Mailserver and set Default regisrty entry to smartermail
5. Save the registry. 
6. Open Plesk using admin login, go to  Tool and setting >> Server components >> and click on refresh/