Btw I didn't get any email or reply for banning.
The message showing you are banned should be something like this, but in red;
"Sorry banned user, you are banned from posting or sending personal messages on this forum.
You have been permanently banned by a forum moderator, probably due to spam or plagiarism. You may appeal here, but your chances are not good: banappeals...@ appeal mail"
The address boldened is where you should send your appeal to.