Outgoing e-mail doesn't get delivered
I've been having this problem for several weeks. Most of my out going e-mails from my cox.net account go through, no problem. Some of my outgoing e-mails from my cox.net address do not get delivered and I do not receive any notification that it has not been delivered. It seems that everyone with a verizon address is in this category. Other messages I send from my cox.net account bounce and I get something like 'undelivered due to spam filter'. One in particular has an optonline.net address. I have even tried sending a blank message and I get the same 'spam filter' message. In all cases, I can send these people e-mails from my google account and they go through, no problems. So I am sure I am using their correct addresses. I do send out a lot of e-mails every month so I was wondering if I got placed on some sort of 'this gut is a spammer' list. If so, how do I get off the list?