Send & Receive Issues

Fix Gmail Rejecting Emails from Outlook.sk Due to Low Domain Reputation

Camila Milosovich Oct 9, 2026 870 views

Question details

Users are unable to send emails from regional Outlook domains (such as Outlook.sk, Outlook.in, and Outlook.cz) to Gmail addresses because Google's servers reject the messages, citing a very low sending domain reputation.

How to Resolve Gmail Rejecting Emails from Outlook.sk and Public Microsoft Domains

Product: Microsoft Outlook
Device & OS: not provided
Scenario: Sending an email from a public, Microsoft-managed regional domain to a Gmail recipient.
Observed behavior: The email fails to deliver, and the sender receives a bounce-back notification stating that Google rejected the message due to the low reputation of the sending domain.

Before you start

Verify your bounce-back message explicitly mentions a 'low domain reputation' error from Google to confirm this is a server-side rejection rather than a simple typo in the recipient's email address.

Solution 1Recommended

Escalate the Public Domain Reputation Issue to Microsoft Support

Since Outlook.sk and Outlook.in are Microsoft-managed public domains, users cannot adjust DNS or DKIM settings themselves. Microsoft must coordinate directly with Google to restore the domain's sending reputation.

Because these are not custom business domains, you cannot access the DNS records via a Microsoft 365 admin center to implement standard authentication fixes. The core infrastructure is entirely owned by Microsoft.

Log in to Outlook Web

Open your web browser, navigate to Outlook.com, and sign in with your affected Outlook.sk or Outlook.in email credentials.

Access the Help pane

Click the Help icon (question mark) located in the upper-right corner of the top navigation bar to open the support sidebar.

Submit a detailed support ticket

Type 'Contact Support' in the search bar. When prompted to describe your issue, clearly state that you are using a Microsoft-managed public domain and that Gmail is rejecting your outgoing messages due to 'low domain reputation'. Request that the ticket be escalated to the domain management team.

Escalate the Public Domain Reputation Issue to Microsoft Support

Wait for server-side resolution: This issue relies entirely on Microsoft investigating their sending infrastructure and resolving the reputation blocklist with Google. It may take several days for mail delivery to normalize once Microsoft takes action.

Solution 2

Add and Send from a Standard @Outlook.com Alias

Use a standard @outlook.com alias as a temporary workaround, as the global outlook.com domain typically maintains a healthy sender reputation with Google.

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Frequently Asked Questions

Why does Gmail consider Outlook.sk to have a low domain reputation?

Google's automated security filters track the quality of emails originating from specific domains. If spammers or bulk senders abuse a public domain like Outlook.sk, Google temporarily flags the entire domain and rejects incoming emails to protect Gmail users from potential spam.

Can I manually configure DKIM or SPF settings to fix this?

No. Because Outlook.sk, Outlook.in, and Outlook.cz are public domains managed entirely by Microsoft, individual users do not have access to the backend DNS settings required to configure DomainKeys Identified Mail (DKIM) or Sender Policy Framework (SPF) records.

Are other Microsoft email domains affected by this Gmail rejection issue?

Yes, users have widely reported similar low reputation rejections when attempting to send emails to Gmail from various regional Microsoft public domains, including Outlook.in and Outlook.cz.

Will changing the subject line or email content bypass the Google rejection?

Typically, no. If the bounce-back error strictly cites the domain's reputation, modifying your subject line or removing links in the body content will not resolve the delivery failure. The domain reputation issue must be cleared at the server level by Microsoft.

Outlook & Email Problems