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  1. Hornetsecurity KnowledgeBase
  2. Spam and Malware Protection
  3. FAQ

FAQ

  • Why an email has been blocked or quarantined?
  • Why are emails marked as spam despite being on the Allow List?
  • What does the error "This action is not allowed for this email type" mean?
  • Not possible to connect to smarthost for outgoing emails
  • Why are outgoing emails with the error code 554 5.7.1 rejected?
  • I am waiting for an email that had been sent to me, but I didn’t receive it yet. Was it blocked?
  • What is behind the Infomail filter?
  • Why are Hornetsecurity IP addresses listed by UCEPROTECT?
  • Why does my email contain a Winmail.dat?
  • Why are Hornetsecurity IP addresses listed at Backscatterer?
  • When will another delivery attempt be made if my mail server is not available?
  • How long are spam mails in the quarantine accessible via the spam report or the control panel?
  • Can the spam filter service be limited to only a part of the users?
  • How long does Hornetsecurity retain emails in case of temporary undeliverability?
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