There are different reasons why a message you sent to an email-distribution list was held for moderation or rejected.
If your message is held or rejected, you will typically receive a message indicating why:
- Message body or message itself is too big
- Too many recipients to the message
- Message has implicit destination
- You are not allowed to post to this mailing list
- No reason given
Message body is too big or your message is too big
Issue: Your message has exceeded the maximum message size allowed for the list.
Solution: Your message exceeded the message size limit. in one of several ways - how your message was composed (plain text vs. html), the number of pictures in your message, the size of the pictures, or the number and/or size of attachments amongst other reasons.
Too many recipients to the message
Issue: Your message is addressed to too many people. Spam messages frequently put a large number of email addresses in the To: and/or Cc: fields of a message. The server tries to detect spam messages and when a large number of email messages are in either the To: and/or Cc: fields and the number exceeds a threshold amount, it will either hold the message for moderation or reject it.
Solution: Always put the list email address in either the To: and/or Cc: field of your message when you want to post a message to a list. Any other individual email addresses should be put in the Bcc: or Bc: field. Do not put any global email list addresses in the Bcc: or Bc: field. The total number of addresses in the To: and/or Cc: fields should not exceed 10 addresses. Also, see the message below regarding putting the list email address in the Bcc: or Bc: field.
Message has implicit destination
Issue: Your message was received but you did not put the list email address in either the To: and/or Cc: fields of your message. Most likely, you sent your message to others (using the To: and/or Cc: fields) and put the list email address in the Bcc: or Bc: field of your message. This is another method used by spam messages to try to proliferate their messages. Messages which are not directly addressed to the list in either the To: and/or Cc: fields will be held for moderation and/or rejected.
Solution: Always put the list email address in either the To: and/or Cc: fields when you want to post a message to a list. Also, see the message above regarding the number of email addresses you can put in the To: and/or Cc: fields.
You are not allowed to post to this mailing list.
Issue: You have posted your message to a restricted list.
Solution: To post to one or all of the restricted lists, you must be authorized. To become authorized, please read the documentation on how to "How to Get Authorization to Post to a Restricted List".
No reason given
Issue: Generally, you will receive this message after receiving a previous message indicating your message is being held for moderation and the reason it is being held. Your message was then rejected for the same reason.
Solution: If you have received this message, refer back to the previous message indicating why your message was being held for moderation.