Internet SIOL

Pozdravljeni,
imam dostop do interneta prek SIOLa in KISSa. mail imam prek SIOLa. Ce se povezem na internet prek KISSa in zelim poslati nekomu mail ne hotmail se vedno pojavi napaka in ne more poslati:

The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was 'xxxxx@hotmail.com'. Subject '', Account: 'siol', Server: 'mail.siol.net', Protocol: SMTP, Server Response: '550 relaying mail to hotmail.com is not allowed', Port: 25, Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC79

Ali morda kdo ve zakaj se to naredi. Na ostale maile se poslje normalno. In pa SMS sporocila sploh ne pridejo na mobitel.
Ali naj poklicem na tehnicno pomoc na Telekom ane?

lep pozdrav,
Miran

Problem je v tem ker siolov smtp server ne pusti relajanja, se pravi ko si gore preko KISS-a uproabljaj za posiljanje kissov smtp server, ko pa si gore preko siola pa siolovega in nebos mel blemov.