Re: OE6 wont send to certain email addresses
From: N. Miller (anonymous_at_discussions.microsoft.com)
Date: 02/02/05
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Date: Tue, 1 Feb 2005 21:00:39 -0800
In article <#kD6JAICFHA.2568@TK2MSFTNGP11.phx.gbl>, JJP says...
> Thank you everyone for the suggestions.
> Here is where I am at with this now.
> It will send an email right away for any email address except Yahoo and
> Hotmail. He is able to send to my sister, friends of his, business emails
> no problem as long as they are not Yahoo or Hotmail.
> The Yahoo email tests I did from this weekend started arriving around 5pm
> yesterday (almost 24 hours). The tests we did from yesterday morning
> started arriving THIS morning (about 16 hours). The Hotmail ones have not
> arrived. I know you cannot control what happens with an email once it is
> travelling out in cyberspace, but I think this much delay indicates
> something is hosed with OE because of NAS.
> I will try some of your suggestions and see what helps. I did call Linksys
> on Sunday and they did have me try tinkering with the MTU, so that was a
> good suggestion as well. I will troubleshoot with McAfee some more as well.
If the mail was sent, it is beyond anything that NAS can do to MSOE. Once
MSOE gets the "220 Message queued for delivery" notice from the SMTP server,
it moves the message to the "Sent Items" folder, and it is done for the day.
The rest is up to the relay chain from the source to the destination.
Some servers have implemented a process called, "greylisting. This causes an
MX server to send a "4xx" temporary failure to the SMTP relay server,
following which the MX will not accept email from the relay for a specified
period of time. A rational relay server will hold the mail in its delivery
queue for, typically, six hours, then try to resend. When it does, the
"greylisting" MX will then accept the message for delivery. The theory is
that spammers, using open proxies, will, maybe, only make immediate retries,
then give up.
I don't know if either Hotmail, or Yahoo!, have implemented "greylisting".
Personal experience suggests not. There may be an intermediary
"greylisting" relay, or just some other cause for delay. Both the Hotmail
and Yahoo! mail domains are heavily spammed; possibly their servers just get
overloaded with attempts to deliver spam, and that slows down the whole
process.
Remember to thank a spammer for the way that the Internet is currently not
working.
-- Norman ~Win dain a lotica, En vai tu ri, Si lo ta ~Fin dein a loluca, En dragu a sei lain ~Vi fa-ru les shutai am, En riga-lint
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