There are several common causes for this problem. Generally, unless you've received an announcement from us stating that mail isn't working properly at the time you're having difficulty, chances are it is one of the following issues.
ISPs often block the outgoing mail port in an effort to force their users to use their own email servers. They sometimes do this without warning and sometimes even intermittently.
For this problem, we run SMTP servers on port 26, 587 as well as port 25. This way, you can still use our servers for sending email even if your ISP is blocking port 25.
See here: http://helpdesk.rocksolidnet.com/adpanel/supportkb.php?action=edit&id=8
If your ISP isn't the cause of your problem sending email, most likely you do not have email/smtp authentication turned on in your email client. If you want to use our smtp servers, you must enable authentication in your email client. If you do not, our Spam system may treat you as a Spammer.
If neither of these solutions work for you, please send an email to support@rocksolidnet.com and we will take a look at your problem.
Please refer to the 'Email' section of this site for instructions on how to accomplish all of the above. You may also find this information in video form at http://rocksolidnet.com/tutorials
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