Re: [E-mail] Microsoft Hotmail Blocks Comcast Traf

Author	All Replies
fantomposter Phantom Poster Premium join:2002-09-21 Independence, OH 2 edits	reply to funchords Re: [E-mail] Microsoft Hotmail Blocks Comcast Traf said by funchords : Good test. Shows that it's Comcast's problem accepting the mail. Not "MSN and Hotmail are experiencing problems receiving email from some domains" One possibility you all should keep in mind: If Hotmail is refusing/having trouble with receiving Comcast email and I were Comcast I would most certainly set up my servers to refuse the email going to Hotmail. Simple self defense. If Comcast knows it can not deliver it to Hotmail, Comcast should refuse it up front. To keep their servers from having thousands (millions?) of messages stuck in their outbound queue. And having to keep retrying and sending NDR's back to their users. Setting up a refusal is simple to do, and provides instant feedback to Comcast customers that the email is not going through. And keeps their servers from choking on the queue'd messages. One more thing it does, if Hotmail really is having trouble the last thing they need is to have Comcast continue to hammer at their servers with millions of retries.
	to forum · permalink · · 2005-12-01 13:47:35 · (locked)
funchords Hello Premium,MVM join:2001-03-11 Washington, DC ·Verizon Online DSL ·Skype 1 edit	said by fantomposter : One possibility you all should keep in mind: If Hotmail is refusing/having trouble with receiving Comcast email and I were Comcast I would most certainly set up my servers to refuse the email going to Hotmail. That's the latest explanation. I responded to it in their thread. said by Re: 550 permit denied error when sending email to MSN/Hotmail by jason1 : > BlueChip & others, > > As it has been stated by others above, Comcast is > rejecting emails destined for the MSN/Hotmail domain > at this time. So yes, the 550 Permit Denied message > is coming from the Comcast server, not MSN/Hotmail. > > > The reason these emails are currently being rejected > is to keep this issue from affecting email delivery > to other non-MSN/Hotmail domains. Once the issue is > resolved and our engineers notice the current > MSN/Hotmail email queue start to decrease, they will > remove this block and start allowing email to be > delivered to MSN/Hotmail. Jason, With respect, I'll believe it when I see MSN Hotmail post it on ~their~ status board. ( »support.msn.com/networkstatusres···ocId=460 ) ... at the time of this posting, even after their furiously working on the problem for more than 24 hours, it still says "The service is available; there are no known network issues at this time." I'm betting that's because there is no MSN Hotmail problem. Someone in the Comcast chain of command has explained this issue away without really checking, and Tech Support (in good faith) is just doing their job and telling the customers what they think is going on. But it's time for Tech Support to pick up the phone and say, "WTF!?" If I'm wrong, and the 550 response really is to shield Hotmail from a flood of mail, one of three things should happen: - Comcast should accept the message and then send a Delivery Status Notification that delivery would be delayed. When service is restored, you can send to Hotmail in small bursts. - Comcast should get a backup method from hotmail and use that until hotmail fixes the primary problem. or - Comcast should reject the message, but with a 450 or 452 temporarily rejected code, not a 550 permanently rejected code. Please, no more explanations. This needs followup -- Robb Topolski -= funchords.com =- Hillsboro, Oregon USA ~ Keeper of the D-Link FAQ ~ Did you Search? ~ More features, Free! Join BBR! ~
	to forum · permalink · · 2005-12-01 13:58:30 · (locked)
jbob Reach Out and Touch Someone Premium join:2004-04-26 Little Rock, AR ·Comcast ·AT&T Southwest	Yep just read your post on the pinned thread. I just this morning started reading that one. I think "Early Out' gets a little testy. While I can agree with the reasons for blocking I wonder why Comcast is blocking messages to Hotmail but others are not? I wonder if there wasn't some secret handshake going on.
	to forum · permalink · · 2005-12-01 14:06:20 · (locked)
NormanS Premium,MVM join:2001-02-14 San Jose, CA ·Pacific Bell - SBC	reply to fantomposter said by fantomposter : If Hotmail is refusing/having trouble with receiving Comcast email and I were Comcast I would most certainly set up my servers to refuse the email going to Hotmail. Simple self defense. If Comcast knows it can not deliver it to Hotmail, Comcast should refuse it up front. To keep their servers from having thousands (millions?) of messages stuck in their outbound queue. And having to keep retrying and sending NDR's back to their users. It is a "pissing match" between Comcast and Hotmail, is my guess. The earliest evidence I saw suggests that Comcast had no rDNS configured on some of their output servers; appaently MSN was blocking messages from those servers. Two ways to fix that: •MSN stops filtering email for lack of rDNS on the Comcast MTAs. •Comcast configures rDNS on their MTAs. That kind of filtering is a viable foil against spam; and Comcast can't tell MSN how to run their servers. True, Comcast can do their own filtering to avoid the NDR traffic, but that issue still falls back on Comcast. Configure their servers to have rDNS names; preferably relating to the host name being used in the HELO/EHLO command. The last I checked, the Comcast server which formerly had no rDNS name now has rDNS matching the host name used in the HELO/EHLO command. Maybe there is still some testing/tweaking going on before Comcast feels ready to unblock things. But, from where I stand, this whole thing was a Comcast problem from the get-go. -- Norman ~Oh Lord, why have you come ~To Konnyu, with the Lion and the Drum
	to forum · permalink · · 2005-12-01 14:10:49 · (locked)


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