I use Verizon as my internet access provider. In addition to my verizon e-mail address I have two others.
Suddenly Verizon is preventing me from sending any e-mail message with an attachment from the non-verizon account.
My OS is Mac OS X 10.7.5. I am using the native Mail program.
I have had this non-verizon e-mail address for years and have used it to send attachments through Verizon for years. This is a new problem. Changing the outgoing server from outgoing.verizon.net to smtp.verizon.net has no effect.
The attachment itself is only 94 kb.
Any suggestions?