I have a very unusual problem. there is a user that is getting emails intended for users who’s email addresses are not in the NAB. I checked the user’s (that is getting the wrong emails) person doc and everything seems to be fine. Internet email address and so on. The intended recipient’s (that doesn’t exist in the NAB) internet email address is not even remotely similar to the person getting these emails. This has happened twice. Both intended recipiants are NOT in the NAB but have the same internet domain (@xxx.com) as the user getting the emails but the first part (xxxx@) is completely different.
Subject: someone getting emails not intended for him
Are you sure there is not SOME reference to it on the user’s person document. Remember, Domino doesn’t just use the Internet address field to deliver mail. If that fails it tries various combinations of name, username and shortname.
An SMTP mail has at least two parts, the envelope and the content. The envelope defines from whom the mail is coming and to whom it should be delivered. In the content is defined what sender and recipient should be shown in the mail client (doesn’t matter what kind of mail client you use).
Usually both entries are the same. Spammers however abuse this weakness by entering real recipient addresses only in the envelope, whereas the content has completely different entries. Domino (as every other mail system) uses the envelope information to route the emails. Unfortunately the envelope information is deleted by the router as soon as the email has left the mail.box. The result is, that the recipient gets an email without beeing listed in any field (To, Copy or Blindcopy). This behaviour is according to the RFC standard of SMTP, because otherwise no blindcopy functionality will be possible.
The only possibility to make this transparent for your users is to enable the follwing setting in the configuration document of your server:
MIME - Advanced - Advanced inbound message options - “If each recipient’s address does not appear in any address header, then add their address to the BCC list”.
This setting will add the recepient address from the envelope section in the BCC-Field. This won’t prevent the router from forwarding the email, but your users at least won’t be irritated by such emails.