Smtp data-2 protocol error

smtp data-2 protocol error

This is useful only as a permanent error. More recipients were specified for the message than could have been delivered by the protocol. This error should. This can be caused by a spam filter identifying your machine as a relay, or as a machine not trusted to send emails from your domain. Error ' Common SMTP error codes. The most common SMTP error code when sending email is SMTP error is a generic error message. Put plainly, it. smtp data-2 protocol error


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