Up until this week I have been able to send e-mail to all of our club member listing a blog site to read for daily information. Starting Wednesday I started getting a message than my e-mail can't be sent because it is detected as spam. Once I get that message I can't even resend it to a smaller number of people. I have tried breaking it into 20 members at a time but that doesn't work either. What changed? The total number of people I mail to with the same message is 60.
Verizon's outbound spam filter scans the content of your message, not the number of recipients.
You should read the Spam FAQ page provided in the error. You will not get any response when sending the message to spamdetector.update@verizon.net for review. You attach the message that you are unable to send, and they review it. Depending on the outcome of the investigation, the filter will either be updated to allow the content that was previously blocked, or it will be determined to be a legitimate block and no changes will be made.
Some troubleshooting steps you can try:
If you have a signature, try removing one line at a time from it and attempting to send the message again. Some signatures look like "ads" to the filters, apparently.
If you are using a pop3 client (Outlook, Outlook Express, etc.) try sending your message from the verizon.net website. If this resolves the issue, then it is something that your client is adding to the message that is causing it to be blocked.
If the Subject line of your message has a whole bunch of "Fwd: Fwd: Re: Fwd:" try removing some of them.
Remove any links/URLs from the email one at a time to isolate if one of them is causing the block.
Start a new topic or ask questions in the open forum.
