On Wed, 2004-11-03 at 20:10, Mike Witt wrote: > > I'm assuming that 'rmiles' is not an alias for you, right? > AFAIK, the "for" line (like the line above) is the only indication > of (for example) a BCCed msg. I've gotten mail which this for > line was NOT to any alias of mine. I don't know how this happens. > > I would really be curious if someone could comment on whether > it's possible for someone to get a message to you without ANY > visible indication of who it's for in the header. > Actually I believe it is possible. When a message is being sent to an MTA there is a envelope that contains the from and to information that is used by the MTA to deliver the message. The header lines you typically see in the message are sent as part of the message but are not really used to deliver the message. You can see this if you ever telnet to port 25 of an MTA and manually enter a message. HELO somedomain.com MAIL FROM: <bogususer@xxxxxxxxxxxxxx> RCPT TO: <youremailID@xxxxxxxxxxxxxx> DATA After you enter the DATA statement you can enter various header lines that you see in normal email such as subject:, from:, to:, etc. Follow that by the text of the message and end it with a . (period) by itself on a line. At that point the MTA should process the message. As you can see you can put any kind of header in after the DATA line including bogus to: and from: lines. > It's possible to see sendmail delivering me the message by > looking in /var/log/maillog, but still no visible indication > of WHY it comes to me. > > -Mike -- Scot L. Harris webid@xxxxxxxxxx "His eyes were cold. As cold as the bitter winter snow that was falling outside. Yes, cold and therefore difficult to chew..."
