-----Original Message----- From: owner-postfix-us...@postfix.org [mailto:owner-postfix-us...@postfix.org] On Behalf Of Wietse Venema Sent: Tuesday, January 25, 2011 8:11 PM To: Postfix users Subject: Re: Sender-ID validation via Blackberry failing
Sharma, Ashish: > Hi, > > I have a Postfix mail receiving server, on this I am using sid-milter > (found at http://sourceforge.net/projects/sid-milter/ got from > http://www.postfix.org/addon.html) tool to validate senderID and > SPF. > > Here the problem is for mail servers that implement Sender-ID, > mail servers that are implementing sender-ID and having their > mails sent via Blackberry are having their sender-ID (sender-id=neutral) > not getting verified on my postfix end. According to the Microsoft website: How Sender ID Works Sender ID seeks to verify that every e-mail message originates from the Internet domain from which it claims to have been sent. This is accomplished by checking the address of the server that sent the mail against a registered list of servers that the domain owner has authorized to send e-mail. In other words, it "works" only when the domain owner adds blackberry's IP addresses to their SenderID authorization record. http://www.microsoft.com/mscorp/safety/technologies/senderid/overview.mspx Wietse Wietse, As is evident from the header value : Authentication-Results: dev1.cpgtest.ostinet.net; sender-id=neutral header.from=xxxxxxxx...@aol.com; spf=pass smtp.mfrom=SRS0=nRLNv7=UW=aol.com=xxxxxxxx...@srs.bis7.eu.blackberry.com I can see that Blackberry implements SRS, so I am thinking on the terms to lower the priority of Sender-ID verification if the SRS is correctly implemented/valid SRS by mail forwarders like 'Blackberry'. Valid SRS/correct SRS, is it possible in general ? What are your comments on this? Thanks Ashish
