+ 0 Votes Verizon can help..... ThumbsUp2 6 years ago Verizon, your ISP, is probably the one to contact. Your SMTP settings must match how they want the account to be set up, or they won't allow you to use their server to send email. We can't tell you what those settings should be. + 0 Votes changed to 587 sophiesnowangel 4 years ago After reading your post I called Verizon with this problem that cropped up this morning. I changed my personal/consulting email account to 587 and it worked; the other my work email, did not. I will need to call tech support at work tomorrow. This literally happened overnight. + 0 Votes 25 port problem bugbrown Updated - 4 years ago The way I understand it is that Verizon is trying to decrease spam and has reconfigured things to eliminate the use of the 25 port for outgoing messages. There is a way to change to the 587 port, but it has not solved the problem for me. The only solutions that I am aware of are to use a verizon.net email address, to upgrade to a high speed internet service with static IP addressing or to use web-based email. I have not decided which I will use. It is a major pain in the butt.Go to Verizon's website and enter port 587 in the search function and it will bring you to the info on how to change from port 25 to port 587. I hope it works for you.