nanog mailing list archives
Re: AOL, was Yahoo and their mail filters..
From: "John R. Levine" <johnl () iecc com>
Date: Thu, 26 Feb 2009 14:16:25 +0000 (GMT)
AOL's ARF redaction also causes problems identifying problem .forwarders. I don't understand what they are trying to defend against.
Oh, I went around with them a few times and finally got a reasonable explanation. They're concerned about disclosing the recipient of a message to someone who didn't send it. That's why they redact the recipient address, but not an ever-so-lightly encoded version of it elsewhere in the headers. If you can decode it, you presumably must have put it there in the first place. They've redacted more heavily than that in the past, but it turns out that was buggy software, not policy.
So if it's a problem, just add and X-forwarded-for header with a rot13 version of the address and you can always recover that. I also gather that if you happen to have run your mail through a filter and have an opinion of its spamminess, an X-Spam-Status header is treated as a hint to deliver to the spam folder where it won't counted against you, but it's still there for the user in case you guessed wrong.
Regards, John Levine, johnl () iecc com, Primary Perpetrator of "The Internet for Dummies", Information Superhighwayman wanna-be, http://www.johnlevine.com, ex-Mayor "More Wiener schnitzel, please", said Tom, revealingly.
Current thread:
- Re: Yahoo and their mail filters.., (continued)
- Re: Yahoo and their mail filters.. Marshall Eubanks (Feb 26)
- Re: Yahoo and their mail filters.. Seth Mattinen (Feb 25)
- Re: Yahoo and their mail filters.. mike (Feb 25)
- Re: Yahoo and their mail filters.. Tony Finch (Feb 25)
- RE: Yahoo and their mail filters.. Ray Corbin (Feb 25)
- Re: Yahoo and their mail filters.. John Levine (Feb 25)
- Re: Yahoo and their mail filters.. Peter Beckman (Feb 25)
- Re: Yahoo and their mail filters.. Tony Finch (Feb 26)
- Re: Yahoo and their mail filters.. John R. Levine (Feb 26)
- Re: Yahoo and their mail filters.. Tony Finch (Feb 26)
- Re: AOL, was Yahoo and their mail filters.. John R. Levine (Feb 26)
- Re: Yahoo and their mail filters.. Suresh Ramasubramanian (Feb 26)
- Re: Yahoo and their mail filters.. Micheal Patterson (Feb 25)
- Re: Yahoo and their mail filters.. mike (Feb 25)
- Re: Yahoo and their mail filters.. Suresh Ramasubramanian (Feb 25)
- Re: Yahoo and their mail filters.. Barry Shein (Feb 25)
- Re: Yahoo and their mail filters.. Suresh Ramasubramanian (Feb 25)
- Re: Yahoo and their mail filters.. Barry Shein (Feb 25)
- Re: Yahoo and their mail filters.. Suresh Ramasubramanian (Feb 25)
- Re: Yahoo and their mail filters.. Matthew Petach (Feb 25)