We take sending of emaills very seriously as there are so many spammers sending messages out these days, so in order for us to protect our server from being blocked by spam organizations we limit the amout of emails sent out per hour to 250 emails per account per hour.
When you send out more than that amount spamhause etc will start blacklisting the IP address of your adsl accounts. So it is the domain owners responsibility to make sure that his/her domain is not compromised to being blacklisted.
