[MikusR]

Because they are so cheap, they are often used by spammers or other shady entities. So occasionally they may ask for ID. For example, if you connect from one country, use an address from another country and use prepaid card from yet another country.

[crotchfire]

used by spammers

Then why don't they just ask for ID if you want port 25 unblocked?

Doesn't add up.

[V__]

The ports are blocked by default for new customers. After a few billing cycles, a request can be made to have it lifted.