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Why is Strato IMAP login failing since February 5th?
Incident Report: Strato Email Service Disruption
Date: February 5, 2026
Service Affected: Email Retrieval (IMAP)
Status: Active Investigation / Restriction
Strato customers are currently encountering significant difficulties accessing email accounts. As of 08:00 AM on February 5, 2026, a server-side disruption is restricting IMAP connections. This outage prevents email clients—such as Microsoft Outlook, Apple Mail, or mobile apps—from synchronizing with the server to retrieve new messages.
Official Communication and Technical Details
Strato has acknowledged the incident. The company issued a notification confirming that targeted restrictions on IMAP retrieval are in effect. Their technical teams are working intensively to restore full connectivity.
Crucially, data integrity remains intact. Strato explicitly stated that incoming emails are still reaching their servers. While your local device cannot currently download these messages, the server accepts and stores them. Once the engineering team resolves the IMAP bottleneck, all pending emails will sync to your inbox automatically.
User Impact and Verification
External monitoring supports these reports. The outage tracking platform allestoerungen.de registered a sharp spike in error reports beginning at 08:00 AM on February 5.
The primary symptoms reported by the user base include:
- Connection Timeouts: Email clients failing to connect to the incoming mail server.
- Login Failures: Repeated password prompts or authentication errors.
- Synchronization Halts: Inboxes displaying outdated states without loading recent correspondence.
If you cannot access your mail via a desktop or mobile client, the current advisory recommendation is to wait for the server-side restoration. Avoid changing your password or server settings during this time, as local configuration is likely not the cause of the failure.