Re: Delayed emails

I just did a ping right before your reply came in, to the website of client
who was reporting that their emails weren't getting through this morning. The
results were normal. No lost packets, some high times, but nothing glaring. I
have Syamantec AV for SMTP gateways sitting in front of my Exchange server,
getting the incoming mail and scanning for spam and virus content. It's
worked normally up until now, but when I was just doing an email server test
from websitepulse.com, I was getting an error saying no SMTP server
available. I checked and the service is running, but it's 3 year old
software, so maybe that's the suspect. What do you think? Is there some way
to analyze why the SMTP connection is not being made?

"John Oliver, Jr. [MVP]" wrote:

I would lean towards your WAN circuit having some issues at this point,
possibly CRC errors. Have them perform a circuit test to insure its
operating correctly. As for LAN software, I like Ethereal and its free.
You can also perform a simple continuous PING test with Ping -t command to
see if it times out after so long to an external IP or address.

--
John Oliver, Jr
MCSE, MCT, CCNA
Exchange MVP 2007
Microsoft Certified Partner


"maitakeboy" <maitakeboy@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:E109B9F4-CFFE-4E29-B8A7-0F0F7F2EAA91@xxxxxxxxxxxxxxxx
John,

Thanks again for your reply.
I ended up finding out about the ExBPA and ran it against my Exchange 200
server and came up with a couple fairly minor things.
The thing is, nothing has changed substantially interms of hardware or
software or configuration which could account for this.
I also ran the MS SMTP analyzer and everything came back normal, though
that
was for outgoing.
I have been using an outside mail monitoring service for the last several
days, and notice a continual timing out of the test messages, or slowness
in
the time of response. So I'm guessing it's periodic WAN or LAN congestion.
Would network monitor be the best bet for checking out the LAN? Or can you
suggest some other tool? I was going to have my bandwidth provider monitor
my
link to get some data on the WAN side. I haven't had any complaints about
IE
timeouts, though sometimes it is slow, but we have 125 people on a 5MB
link,
so it's not going to be blazing.
It's the intermittent character that is so frustrating to diagnose. Plus
that it's incoming.
Any further suggestions would be greatly appreciated.

"John Oliver, Jr. [MVP]" wrote:

What version of Exchange Server are you running? ExBPA is Exchange Best
Practice Analyzer, please download and run it against your Exchange
Server,

http://www.microsoft.com/downloads/details.aspx?familyid=DBAB201F-4BEE-4943-AC22-E2DDBD258DF3&displaylang=en

As for test your network equipment, most new equipment now a days is
managed
so you should be able to login to your Router or Switch to turn on some
logging to see if you are getting any errors. Are you noticing any
intermittent timeouts with your Internet connection when browsing with IE
or
downloading a file?

--
John Oliver, Jr
MCSE, MCT, CCNA
Exchange MVP 2007
Microsoft Certified Partner


"maitakeboy" <maitakeboy@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:614BCBB8-5A92-42D7-9EDE-31AD1CE87566@xxxxxxxxxxxxxxxx
John,

Thanks for the reply. What is ExPBA? How would I test my WAN
connection?
Router or Firewall or switch?

"John Oliver, Jr. [MVP]" wrote:

Are you certain your WAN connection is not a fault? How about your
Router/Firewall? How about your network switch or cabling? Have you
run
ExBPA lately?

--
John Oliver, Jr
MCSE, MCT, CCNA
Exchange MVP 2007
Microsoft Certified Partner


"maitakeboy" <maitakeboy@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:D6FDA53E-B293-4834-9F62-E61574675194@xxxxxxxxxxxxxxxx
I am having an intermittent problem with emails being delayed for
anywhere
from 20-30 minutes to 5 hours. There is no consistency interms of
sender
or
receiver. It seems to happen incoming and outgoing, though I hear
about
it
mostly incoming from outside clients. When I originally investigated
this,
I
saw that I was deficient in RAM, and increased it so that the Commit
Charge
peak was well under the RAM amount. I had had no problems prior to
this.
Everything had been functioning smoothly for 2 years.
It seems totally random. One user told me that he recieved response
to
a
group email from an outside client hours before the original email
was
delivered! Emails to/from particular clients will go through
normally,
then
one will be delayed for 30 minutes up to hours.
I'm at a loss as to what to do.
I thought maybe it was a DNS issue, but that seems in order. The
processor
seems to staying below the 50% level for the most part. The Peak
Commit
Charge is at 1.7GB and I have 3 GB in the system. Maybe it's network
related,
but I'm not sure how to find this out.I'm not sure how to go about
diagnosing
this in general. Any help will be greatly appreciated






.

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