Got this post from the moderator of a Yahoo Group I subscribe to, using the address in my sig. Which is my main email address.
***************Dave,
Every one of your postings is being flagged by Yahoo as potential SPAM and is requiring action by the moderators before they are published in the forum.
Something is triggering the Yahoo! SPAM filter.
Your IP address may be blacklisted, your mail client may be adding wrong meta-data, your email ID may be blacklisted, your domain may be blacklisted, etc. Can you please investigate as **** and myself are getting tired of continually having to approve your postings.
******************Doesn't appear to happen with another Yahoo Group I subscribe to - and happen to be a joint moderator ;-) - so how do I check what the problem is?