I also turned off "Failed Domain Skipping" for the same reasons, but I
don't believe that I had any issues besides temporary delays causing
confusion when helping clients get their servers back online after
failures. I figure that with all the processing power that goes into
spam and virus blocking, caching and failed domain skipping aren't but
0.1% of the utilization and it's likely safer to turn them off. Who
knows.
Matt
Colbeck, Andrew wrote:
Message
Interestingly
enough, cacheing isn't the problem on our IMail side. Microsoft has
not removed the unresponsive hosts from their MX records despite the
problem persisting over a week and those hosts never responding.
If Microsoft had changed their DNS, cacheing would be an issue.
Also,
MSN addresees would have the same queuing problem. The MX records for
the MSN domain(s) point to the Hotmail servers.
Since
the problem was particularly bad for us, we've put the dummy zone back
in our mail server's local DNS, with the 12, correction, 9 out of 16
hosts that do respond to us.
And
no, I won't share which 9 hosts with the mailing list, as I'm sure your
subset of hotmail servers would be different from mine, and these
messages are archived on the web for future admins to stumble over. If
you really need to do this too, look at the mail hosts and spend some
time searching for those IP addresses in your sys0521.txt log, but
don't forget to check later and remove your dummy zone when Hotmail
returns to normal service.
Andrew
8)
I turned off IMail's internal DNS caching in order to avoid situations
like this. I don't host that many local accounts, but I haven't seen
any build-ups in my spool either time that Hotmail has had issues. My
thought is that maybe you cached records in IMail that corespond to the
servers that aren't functioning properly? This is one of the reasons
why I turned this off at least.
Matt
Robert Shubert wrote:
Incidentally, Hotmail - as of a few day ago - does acknowledge the
problem and said they are working on it. I had to tell my server to
retry for a day before I could start sending to hotmail again.
R
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]] On Behalf Of Colbeck, Andrew
Sent: Tuesday, May 18, 2004 12:40 PM
To: '[EMAIL PROTECTED]'
Subject: RE: [Declude.JunkMail] Hotmail not accept inbound mail?
I'm seeing 2 things:
My default Imail queuing numbers gave too much emphasis on retry threads
and
frequency. I've lowered them.
The same 1/4 of the Hotmail MX hosts are still down this week. I
stuffed
the responsive ones into my cacheing DNS server in a hotmail.com zone
and
that alleviated the queue. The next day I checked my Imail log, because
I
wanted to get rid of that hotmail.com workaround before it bit me, and I
found that the remaining 3/4 of the servers still regularly told my
server
to come back later, refused connection, or dropped the connection.
Andrew 8)
-----Original Message-----
From: David Lewis-Waller [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, May 18, 2004 2:52 AM
To: [EMAIL PROTECTED]
Subject: RE: [Declude.JunkMail] Hotmail not accept inbound mail?
This looks like it's an ongoing, long term issue. DNReports MX
connection
problems.
http://www.dnsreport.com/tools/dnsreport.ch?domain=hotmail.com
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]] On Behalf Of Rick Davidson
Sent: 11 May 2004 20:29
To: [EMAIL PROTECTED]
Subject: Re: [Declude.JunkMail] Hotmail not accept inbound mail?
Yep hotmail is not accepting from us either, I am seeing
connection resets from them
Rick Davidson
National Systems Manager
North American Title Group
-
----- Original Message -----
From: "Colbeck, Andrew" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, May 11, 2004 2:44 PM
Subject: [Declude.JunkMail] Hotmail not accept inbound mail?
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