G DATA 365 | Mail Protection

Notes on Using the Connectors and the Rule. What must be considered?

By creating the rule, you are modifying the mail flow. It is important that no email is lost or becomes undeliverable when setting up this mail flow.

Based on the domain you entered, the rule detects that an email is to be sent to G DATA 365 | Mail Protection via the outbound connector. Once the email has been handed off to the connector, the email is considered delivered to your Microsoft Exchange Online. Microsoft Exchange Online no longer checks whether the email was accepted by G DATA 365 | Mail Protection.

Therefore, the rule must only be enabled once the mail server exists in G DATA 365 | Mail Protection and your domain has been verified.

Otherwise, inbound email will be lost.

The following points must be observed if your MX record points to Microsoft Exchange Online:

  • During initial setup, always proceed in the order we described under Process plan for the product launch G DATA 365 | Mail Protection.

  • Always first check whether new domains are displayed correctly and as verified in G DATA Web Portal before adding the domain to the rule.

  • Do not delete any server from G DATA Web Portal as long as a rule is still active in Microsoft Exchange Online.

  • Domains that are not included in the rule but are active in G DATA 365 | Mail Protection do not have inbound email scanning. However, the email is checked in the mailboxes as part of the rescan.

  • Domains that are included in the rule but are not verified in G DATA 365 | Mail Protection will result in the loss of inbound email for those domains.

If you have selected the settings in this way, changing the MX record is not strictly required. Nevertheless, we recommend switching the MX record to G DATA 365 | Mail Protection as described in this article:
Set your domain’s MX record to G DATA 365 | Mail Protection

If the MX record is not changed, DMARC (Domain-based Message Authentication, Reporting and Conformance) or other specifications may cause more frequent spam classification or non-delivery of email.

Caution: Misconfigured DNS settings can also result in email loss!