The error "Message content rejected" specifically means that the content of your sender's e-mail message was rejected by the SPAM filter.

There are a number of ways around this problem:

1.   If the sender was trying to send a prohibited attachment (except *.exe file type), have them compress the attachment in a *.zip file and try again. You can get a list of prohibited attachments in knowledge base article. If the sender was trying to send *.exe file type, ask them to rename the attachment. You can then save it to your hard drive and rename it back. If you have SpamStopper (or if you are willing to upgrade to SpamStopper), you can turn OFF the "Reject messages with dangerous attachments" flag in "HostPilot > Mail Server > SpamStopper" page. However, this is not recommended because you will receive all virus attachments with no filtration.

2.   Have the sender alter the message so that it looks less like SPAM and more like legitimate mail. You can get a list of what makes a message seem like SPAM on the SpamAssassin test page:
http://www.spamassassin.org/tests.html

3.   If you have SpamStopper (or if you are willing to upgrade to SpamStopper), whitelist the sender or the sender's domain. To do this server-wide, you would go to "HostPilot > Mail Server > SpamStopper > Manage Blocked/Safe Sender Lists". To do this for a single mailbox, you would go to "HostPilot > Mail Server > Mailboxes Manager > Settings (across from the mailbox in question) > Filtering".

4.   If you have SpamStopper (or if you are willing to upgrade to SpamStopper), increase SpamStopper protection level (the higher the number, the less protection level is set) in "HostPilot > Mail Server > SpamStopper". The default protection level is 3. A tolerance level of 4 or more will allow more messages through. A tolerance level of 2 or less will allow fewer messages through.

5.   Change your SPAM filter options from "Reject SPAM on server level without delivering it to mailboxes" to "Just add '[SPAM]' prefix to Subject for spam messages and still deliver to mailboxes" in "HostPilot > Mail Server > SpamStopper". This is generally not recommended, since it will apply to all messages (including real spam).

6.   Disable the SPAM Filter on your account. We recommend against this option, since no mail will be filtered. If you want to do this, you can log into "HostPilot> Mail Server > SpamStopper", and press "Disable SPAM Filtering" button.

 

 

Please note: If the sender is attempting to send a prohibited attachment, whitelisting the sender or setting your spam filter to "just add '[SPAM]' prefix" will not help. You must either have the sender zip the file, or you must turn off the "Reject messages with dangerous attachments" in SpamStopper.