Why the Subscriber is asked to approve their messages because the system thinks it's spam.
Your Mail-List.com account has the option for Subscribers to self moderate emails that appear to be spam. This option can help prevent spam being sent to your Mailing List.
If you are using this feature and a Subscriber is consistently asked to approve their messages, here are some tips to help.
The Self Moderate option will return emails that look like spam to the sender for their approval.
Subject: reply to release your mail (spammod14443441899711)
Make sure messages from Subscribers do not "look" like spam to our servers.
Ask your Subscribers to only send email to your listserv / Mailing List address. Do NOT send list emails to other addresses in the To: or CC: lines. Extra addresses causes our servers to categorize the email as potential spam.
DON'T DO THIS:
INSTEAD, DO THIS: