Re: Problems sending mail to yahoo?
Rich Kulawiec wrote: On Thu, Apr 10, 2008 at 01:30:06PM -0400, Barry Shein wrote: Is it just us or are there general problems with sending email to yahoo in the past few weeks? It's not you. Lots of people are seeing this, as Yahoo's mail servers are apparently too busy sending ever-increasing quantities of spam to have to accept inbound traffic. Sufficiently persistent and lucky people have sometimes managed to penetrate the outer clue-resistant shells of Yahoo and effect changes, but some of those seem ineffective and temporary. There doesn't seem to be any simple, universal fix for this other than advising people that Yahoo's email service is already miserable and continues to deteriorate, and hoping that they migrate elsewhere. ---Rsk The only thing that might cause them to change would be a combination of various ISPs pushing people to switch to e.g. GMail, and in enough numbers that Yahoo! noticed the falloff in ad revenue. Unless it costs them money it is unlikely that they will do anything about it. --Patrick
Re: Problems sending mail to yahoo?
Edward B. DREGER wrote: FB> Date: Thu, 10 Apr 2008 13:48:52 -0500 FB> From: Frank Bulk FB> Q> Does Yahoo! use "greylisting" to reject messages? FB> A> No. FB> FB> http://help.yahoo.com/l/us/yahoo/mail/postmaster/postmaster-05.html First-hand observations trump claims. Eddy -- Everquick Internet - http://www.everquick.net/ A division of Brotsman & Dreger, Inc. - http://www.brotsman.com/ Bandwidth, consulting, e-commerce, hosting, and network building Phone: +1 785 865 5885 Lawrence and [inter]national Phone: +1 316 794 8922 Wichita DO NOT send mail to the following addresses: [EMAIL PROTECTED] -*- [EMAIL PROTECTED] -*- [EMAIL PROTECTED] Sending mail to spambait addresses is a great way to get blocked. Ditto for broken OOO autoresponders and foolish AV software backscatter. I see this 'not greylisting' and we are a fairly tiny operation (I had about 20k outbound emails last week) and don't allow people to autoforward email from our servers. I find that yahoo.com destined mail stays in the queue for about 48 hours, with a 1,1,2,4,4,4,4,etc... hour retry. As I tend to peak at a couple of hundred mail in the queue when things get busy, it's not a problem, but can see where it would be for larger operators. -- Eric Esslinger Information Services Manager Fayetteville Public Utilities Fayetteville, TN 37334 Phone: 931-433-1522x165 Fax: 931-433-0646 [EMAIL PROTECTED] begin:vcard fn:Eric Esslinger n:Esslinger;Eric org:Fayetteville Public Utilities;Telecom adr:;;408 College Street, West;Fayetteville;TN;37334;USA email;internet:[EMAIL PROTECTED] title:Information Services Manager tel;work:931-433-1522x165 tel;fax:931-433-0646 x-mozilla-html:FALSE url:http://www.fpu-tn.com version:2.1 end:vcard
RE: Problems sending mail to yahoo?
FB> Date: Thu, 10 Apr 2008 13:48:52 -0500 FB> From: Frank Bulk FB> Q> Does Yahoo! use "greylisting" to reject messages? FB> A> No. FB> FB> http://help.yahoo.com/l/us/yahoo/mail/postmaster/postmaster-05.html First-hand observations trump claims. Eddy -- Everquick Internet - http://www.everquick.net/ A division of Brotsman & Dreger, Inc. - http://www.brotsman.com/ Bandwidth, consulting, e-commerce, hosting, and network building Phone: +1 785 865 5885 Lawrence and [inter]national Phone: +1 316 794 8922 Wichita DO NOT send mail to the following addresses: [EMAIL PROTECTED] -*- [EMAIL PROTECTED] -*- [EMAIL PROTECTED] Sending mail to spambait addresses is a great way to get blocked. Ditto for broken OOO autoresponders and foolish AV software backscatter.
Re: Problems sending mail to yahoo?
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.
Re: Problems sending mail to yahoo?
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On Apr 10, 2008, at 1:35 PM, Jeff Shultz wrote: This thread got me checking logs and I just spotted several of those "deferred due to user complaints" tags. And compared to them, we're tiny. Don't know if it's widespread, but it appears you are not the only one so blessed. We've seen this before too but this week it has been different. Every single host that relays email on our network has these in the queue. Now a couple of them do mailing lists and such so I could see it happening but a couple of them don't do anything high volume at all. For some of them some mail goes through but only some of the time. It seems like if we hit the right MX machine it works and other times it does not. We tried going around them by sending mail over to an employee's personal mail server (which does nearly no volume at all) but even it is blocked probably 1/2 the time. I'm not sure what is going on but given all this I can't believe it is just "normal". We filled out one of those forms but just got back a response that said it wasn't happening but if it was we should see their "best practices" URL. Only problem is we actually do everything on their list (including both DomainKeys and DKIM). Chris Chris Owen ~ Garden City (620) 275-1900 ~ Lottery (noun): President ~ Wichita (316) 858-3000 ~A stupidity tax Hubris Communications Inc www.hubris.net -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.8 (Darwin) Comment: Public Key: http://home.hubris.net/owenc/pgpkey.txt Comment: Public Key ID: 0xB513D9DD iEYEARECAAYFAkf+bTQACgkQElUlCLUT2d3lPACeLoNzc790rnHxNAtPEdnpFDpX yAoAoKkMZlw4zX/yzgRsiiJOdD6wCbph =YXy4 -END PGP SIGNATURE-
Re: Problems sending mail to yahoo?
Chris Stone wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA512 Barry Shein wrote: Is it just us or are there general problems with sending email to yahoo in the past few weeks? Our queues to them are backed up though they drain slowly. They frequently return: 421 4.7.0 [TS01] Messages from MAILSERVERIP temporarily deferred due to user complaints - 4.16.55.1; see http://postmaster.yahoo.com/421-ts01.html (where MAILSERVERIP is one of our mail server ip addresses) Just wondering if this was a widespread problem or are we just so blessed, and any insights into what's going on over there. I see this a lot also and what I see causing it is accounts on my servers that don't opt for spam filtering and they have their accounts here set to forward mail to their yahoo.com accounts - spam and everything then gets sent there - they complain to yahoo.com about the spam and bingo - email delays from here to yahoo.com accounts This thread got me checking logs and I just spotted several of those "deferred due to user complaints" tags. And compared to them, we're tiny. Don't know if it's widespread, but it appears you are not the only one so blessed. -- Jeff Shultz
Re: Problems sending mail to yahoo?
Barry Shein wrote: Is it just us or are there general problems with sending email to yahoo in the past few weeks? Our queues to them are backed up though they drain slowly. I know that Yahoo does greylisting, and we often have a large queue backup as a result of mailing lists with a lot of @yahoo.com addresses. As long as you keep retrying I find that they do eventually get through. Between greylisting and sender callback verification, it seems that overall email delivery is increasing in latency and decreasing in reliability.
