host monkeybyte.org[69.16.221.13] said: 550-"The
recipient cannot be verified. Please check all recipients of this 550
message to verify they are valid." (in reply to RCPT TO command)
Protocol, is a collection of languages and tools and an
infrastructure for implementing services for mobile phones.
Traditionally such services have worked via normal phone calls
or short textual messages (e.g., SMS messages in GSM networks).
Neither are very efficient to use, nor very user friendly.
WAP makes it possible to implement services similar to the
World Wide Web.
