Exactly what it means. Call your ISP for clarifying as to how many people you can send the same mail to. Your ISP has put a restriction on this and probably after seeing you continuously send mail out to xxxx amount of recipients.
This is called SPAM Control;
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"otismack" <firstname.lastname@example.org> wrote in message news:email@example.com...
> I have been using Windows Mail successfully to send mail to a group,
> however today I get this error code.
> ::'452 too many recipients', Port: 25, Secure(SSL): No, Server Error:
> 452, Error Number: 0x800CCC79
> My ISP Virgin Media assure me that they do not limit the number of
> recipients and that it is a Windows Mail problem.Each time I try to send
> the e-mail I get a prefix of an e-mail address saying \"The rejected
> e-mail address was ''xxxxxxxxxxx@xxxxxx''
> (xxxxxxxxxxx@xxxxxx). If I remove this address from the group and
> try again, it comes up with the same error message, but with a different
> address rejected. I have been removing addresses from the group, but
> will be here all night I think until it rejects every address in the
> Group. Can somebody help me please??