nanog mailing list archives
Re: Problems sending mail to yahoo?
From: Mike Lewinski <mike () rockynet com>
Date: Thu, 10 Apr 2008 13:43:15 -0600
Frank Bulk wrote:
Q> Does Yahoo! use "greylisting" to reject messages? A> No.The most commonly understood form of "greylisting" is where an SMTP server will reject every message the first time it is attempted, and then accept it if the sending server retries later. The theory is that spammers won't retry messages, while legitimate senders will.Yahoo! does not utilize this method. http://help.yahoo.com/l/us/yahoo/mail/postmaster/postmaster-05.html
Whatever they call it is immaterial. The end result to our system is indistinguishable from real greylisting. Perhaps there's a tiny fraction that aren't ever deferred, but in general I find the majority of our queue is destined to @yahoo.com addresses.
I think I'll followup on the other posters ideas of: 1) Implementing a separate outbound gateway just for yahoo.com 2) Advising users to switch to gmail.
Current thread:
- RE: Problems sending mail to yahoo?, (continued)
- RE: Problems sending mail to yahoo? Raymond L. Corbin (Apr 10)
- Re: Problems sending mail to yahoo? Chris Stone (Apr 10)
- RE: Problems sending mail to yahoo? Raymond L. Corbin (Apr 10)
- Re: Problems sending mail to yahoo? Chris Stone (Apr 10)
- RE: Problems sending mail to yahoo? Raymond L. Corbin (Apr 10)
- RE: Problems sending mail to yahoo? Raymond L. Corbin (Apr 10)
- RE: Problems sending mail to yahoo? Frank Bulk (Apr 10)
- Re: Problems sending mail to yahoo? Mike Lewinski (Apr 10)
- RE: Problems sending mail to yahoo? Edward B. DREGER (Apr 10)
- Re: Problems sending mail to yahoo? Eric Esslinger (Apr 10)
- Re: Problems sending mail to yahoo? Valdis . Kletnieks (Apr 10)
- RE: Problems sending mail to yahoo? Raymond L. Corbin (Apr 10)
- Yahoo Mail Update Jared Mauch (Apr 10)
- Re: Yahoo Mail Update chuck goolsbee (Apr 10)