Known Issues After Migration to the New EU Data Center
SMTP connections to external mail servers
If your application sends email through an external SMTP server (that is, not using localhost) over port 25, you may encounter connection errors after migration.
This occurs because our new data center provider blocks outbound port 25 traffic to help prevent spam abuse.
Resolution:
Update your application to use the SMTP Submission port instead.
MIME type configuration errors
If your application defines MIME types in web.config without first removing existing entries, you may receive configuration errors.
This happens because the new servers may already have the MIME type defined at the system level.
Resolution:
Modify your web.config to remove the MIME type before adding it.
Example:
<remove fileExtension=".woff2" />
<mimeMap fileExtension=".woff2" mimeType="font/x-woff" />
MySQL ODBC driver compatibility
If your ASP or ASP.NET application connects to a MySQL database using the MySQL ODBC driver, you may experience errors after migration.
The new servers use the MySQL ODBC 5.3 driver, while the previous servers may have used version 5.1 or 5.2. MySQL ODBC drivers do not support side-by-side installation, which can cause driver mismatch issues.
Resolution:
Update your database connection string to reference one of the following drivers: