[mso] Re: Is it Outlook or my POP3 server?


======================
Both are typically setup to require authentication these days (although
SMTP didn't use to be) so it's not unusual to have to set your SMTP
settings to require you to authenticate before sending.
======================


Still, MANY do NOT use explicit SMTP suthorization and rely, instead, on
the POP authorization first.

Hence the part of the message that says:

    553. 
    To send mail, 
    first check your mail with a valid POP account; 
    this prevents = unauthorized SPAM relaying.


My current web host for my personal/hobby site, for example, uses this
approach.

And, some ISPs use this approach instead of explicit SMTP authorization
when people are not connected "directly" to them but wish to access
their SMTP.



As for the "rationale" . . . interesting.

Still, it has forced me to use a variety of "tricks" to inhibit sending
until I can receive to establish authentication.


James S. Huggins



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