Every email sent to your domain passes through an upstream filter before it reaches your mailbox: IKARUS mail.security, an Austrian service against spam, malware and phishing.
Two filter levels
IKARUS mail.security is a required part of every Managed Zimbra Hosting. When you order, you choose one of two levels in the spam and malware protection section (heading Spam- und Malwareschutz); one of them is always selected. Billing is per mailbox.
- IKARUS mail.security
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- Spam and malware protection with multi-stage checks
- SPF, DKIM and DMARC evaluation of incoming messages
- Fine-grained settings
- Statistics and reports
- IKARUS mail.security ATP Protection
- Everything from IKARUS mail.security plus a sandbox: suspicious attachments are run and observed before delivery. This also fends off targeted attacks.
The filter takes effect as soon as the MX record of your domain points to mx.mymailwall.com. Outgoing messages are signed with DKIM; this requires the DKIM CNAME in your domain.
S/MIME certificates
In addition, you can book IKARUS mail.security S/MIME: certificates for signing and encrypting messages. You can book at most as many certificates as you have mailboxes. A certificate does not count as an additional mailbox.
After ordering and later changes
After the order we set up the assignment to the filter by hand and get in touch with you. You can add S/MIME certificates later via My Products & Services → your Managed Zimbra Hosting → Actions → Upgrade/Downgrade Options. If you want to switch the level, get in touch with us.
What happens to detected messages
Messages clearly identified as spam or malware do not reach your mailbox. If the assessment is not clear-cut, the message is delivered and ends up in the Junk or Spam folder.
Check the spam folder regularly. If a message lands there by mistake, move it to your inbox. This improves how future messages from the same sender are classified.
If a message you expect does not arrive
- First check the Junk or Spam folder.
- Ask the sender for the exact sender address, the time and any non-delivery report.
- Get in touch with us and give us this information. We check the log and set up an exception if needed.
