If you are sending marketing emails flagged with -MX- but your server is in the US, this suggests you are routing email through a Mexican relay. If you do not have a Mexican audience, this could indicate a misconfigured SMTP relay or a compromised mail server being used to send spam into Mexico.
The string you provided— "tnzyl- -MX- - benic-10-hotmail.com - -Estandar-..." tnzyl- -MX- - benic-10-hotmail.com - -Estandar-...
If you have identified this string in your logs, databases, or export files, follow this remediation plan. If you are sending marketing emails flagged with
It could be a label for an automated digital delivery system (like an Etsy "Instant Download") where a user named "benic-10" is receiving a standard Mexican-localized file. or export files