QUOTE(pinhepe1 @ Jun 29 2009, 05:55 PM)

If Portugal has a LAW that states, that sending email marketing to a company (not private email) is not spam, how can some users (in Portugal), that have these emails on their visiting card has working email, report our email as spam.
You haven't given us much hard info to go on (your mail server IP address, who accused you of spam and wny they did so, etc.), so it is impossible to offer specific advice. If you just got "nastygrams" from your provider on the basis of one or two wrongful reports, then I can sympathize. On the other hand, if enough spam activity was traced to your domain or address block to land you on a blocking list (causing much of your outgoing mail to be bounced or discarded), then you have more serious matters to tend to.
As far as the law is concerned, I am not a lawyer (particularly not a Portuguese one), nor am I a paid employee of SpamCop, but I can say that it isn't so much a matter of what the law allows you to do as it is a matter of
what you can force others to do. You can publish a book but you can't make me read it. You can make a movie, but you can't force me to buy a ticket. You can send me an e-mail, but you can't force me to accept it, even if you scrupulously obeyed all laws in sending it to me. It is my e-mail inbox, I pay for it (or my employer/school/etc. does), I (and they) get to say whose mail I will accept. If I told you you could send me mail last week, but then changed my mind today, then that's pretty much the end of it. If I report you wrongly as a spammer, you can challenge me or even sue me, but you can't force me to continue accepting your mail, nor have the cops toss me in jail for violating a law.
Most mail services that provide spam filtering these days tend to use blocking lists, which tell them what IP addresses have recently been sending large quantities of spam (or doing other bad things). They can choose to block, reject, or even discard mail coming from such addresses. They have a perfect right to do so. That's why it is very important these days for bulk-mailers to make sure they run clean shops, so that they stay off the blocking lists. On the other hand, only an incompetent mail admin would block incoming mail on the basis of one or two personal spam reports (which can of course be mistaken or malicious).
Hope this helps, feel free to reply if you have any further info for us.
-- rick
(on edit: added missing point)