Corner Edge Solutions has added a new spam filter to drastically improve the amount of spam delivered to your inbox, as well as improve email delivery reliability. With this new improvement comes a need to update the outgoing SMTP mail server that is setup in your mail client like Outlook, Thunderbird, or MAC Mail.
IF your current outgoing SMTP server is a corneredge.com name (for example email.corneredge.com, mail.corneredge.com, or smtp.corneredge.com) you will need to update that to read mail3.corneredge.com. If you are using another mail server to relay your sent mail like your ISP’s mail server (for example mail.optonline.net or outgoing.verizon.net), then you do NOT need to udpate that setting.
Here is a picture of what your email settings screen may look like (This is Microsoft Outlook 2010, Other clients will be similar):