phpmailer problem with spam score

Hi there, I am operating page where user receive a message which they do have to confirm. The message does have about 5 links inside to give the user administration to his postings. Now recently I discovered that the message does not go through to everybody since the spam score is 4.2! This is of course not what I want as some users are not able to confirm their postings without this e-mail. I am using the newest phpmailer class available and this is what the header tells me: X-Spam: high X-Spam-score: 4.2 X-Spam-hits: BAYES_50, EXTRA_MPART_TYPE, FORGED_RCVD_HELO, HTML_MESSAGE, HTML_TAG_BALANCE_BODY, MIME_HTML_MOSTLY, SARE_OBFU_PART_ING Is there something I can do about this? Thank you for any suggestions. Merlin