501: Syntax Error. ‘.’ expected

Severity

Recoverable error.

Explanation

An IP address was not separated by decimal points. The IP address should be a valid address in dotted-decimal notation.

System action

SMTP continues.

System programmer response

Correct the syntax to specify a valid IP address in dotted-decimal notation.

Module

SMTPARSE

Destination

DotNum

Parent topic: SMTP reply code messages