I cannot send to any aol account

Sam C

New Email
From my office email I cannot send to any AOL email account. AOL says that AOL does not block any emails, though it's all over the internet that they do. My email client (Aplus.net)from my office says it's AOL. Any ideas? I realize that no one under 60 still has AOL, but I have old friends and clients that do still use it. HELP!