RE: [Declude.JunkMail] Spam box

[Colbeck, Andrew]

BL> If Exchange is set to blindly accept all forwarded mail and then bounce mail sent to invalid accounts Other add-on software aside, in the Microsoft world, that means the internal server needs to be Exchange Server 2003.  Exchange Server 5.5 and Exchange Server 2000 will receive the message, and then bounce it when it discovers that the recipient is not in the Global Address List.   Also, I'd be a little skeptical that ORF would do the job for Goran, as he is basically an ISP for multiple organizations.  He would need extracts from their GALs for each organization, or whatever the equivalent address list is for their internal mail.  I've no suggestion for that.   Andrew 8)   From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bill Landry Sent: Thursday, August 04, 2005 2:27 PM To: Declude.JunkMail@declude.com Subject: Re: [Declude.JunkMail] Spam box ----- Original Message ----- From: Goran Jovanovic To: Declude.JunkMail@declude.com Sent: Thursday, August 04, 2005 2:10 PM Subject: RE: [Declude.JunkMail] Spam box I have a question about these boxes that go in front of Declude, be they IMGATE or ORF or whatever.   The way that I understand it from reading the threads here is that these front end boxes require the complete list of valid e-mail addresses for all domains that are being processed. Is that correct?   If that is correct, then perhaps someone who is gatewaying mail to clients could answer this. How do you get all the e-mail addresses on the front end box and how do you keep it updated?   I am doing gatewaying to various Exchange and other hosting providers and do not host any mail on my site. So am I correct in assuming that this solution will not work in my setup?   If you use a newer version of Postfix, you can use recipient address verification.  See http://www.postfix.org/ADDRESS_VERIFICATION_README.html#recipient for details.  However, the receiving mail server needs to respond properly.  If Exchange is set to blindly accept all forwarded mail and then bounce mail sent to invalid accounts, then it will always respond positively to verification queries, thus defeating the purpose of recipient address verification.   Bill