Smtp error code 1. Smtp exchange. remote server returned '554 5.7.0 < #5.7.228 smtp;550 5.7.228 message is rejected. reason - prohibited file types.

Smtp error code 1. Smtp exchange. remote server returned '554 5.7.0 < #5.7.228 smtp;550 5.7.228 message is rejected. reason - prohibited file types.
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