Symptoms
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The following warning appears in the log after migration/backup creation/backup restoration in Plesk:
The component Spam Filter is not installed. The component AntiVirus is not installed.
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Spamfilter (SpamAssassin) and/or Antivirus components are not installed on both source and target servers.
Cause
Plesk bug PPPM-9203.
Resolution
This is a cosmetic bug and the message can be safely ignored.