This post used to be the most visited post on this website and we still get calls and emails from people desperately seeking help with their Optimum Online email. In fact, we've even had Optimum technicians recommend that folks reach out to us.
Problems Sending E-mail to AOL Email addresses Question: I am having problems sending e-mail to AOL users. My e-mail is getting returned with the following subject: "Returned mail: see transcript for details" or "Warning: could not send message for past 4 hours" Answer: EXPLANATION: The IP address you are sending from has been blocked...
If you believe your email campaigns are being blocked by an ISP or mail server as opposed to being filtered, we suggest you start by reaching out to your subscribers (contacts) or their ISP (Internet Service Provider) directly. If numerous subscribers from the same large domain (such as Gmail, Hotmail or...
