Patrick,
SMTP/cmap is another SMTP server (or AV program!). If you have more than one
SMTP Service installed on the computer, on the same port (25), you will have
problems. Not the ones you report, but problems none the less.
If no firewall or Proxy is involved, I would think you are having some
network problem, that is accented when a lot of (or large) packets are
involved. This usually means MTU problems, in my experience. Most likely
source is the router or client machines.
I did some 'throughput' testing (using our WS_Ping ProPack) to the host and
got quite a few timeouts (10-20%) during the testing. When large packets
were used, it got worse. This is fairly typical when MTU is not correct.
Anyway, your connection seems less than perfect.
Daniel Donnelly
Ipswitch Technical Support
________________________________________________________
See our Knowledge Base at http://support.ipswitch.com/kb
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, August 18, 2000 1:44 PM
Subject: RE: [IMail Forum] Problem downloading mail
> It can't be on my end, tracert communicates directly with the routers. If
it shows it going from one router to another and then back to the first,
that's what the routers are reporting.
>
> However, it does show the packets going through now (and ping is working).
The router at 209.140.169.85 is now sending packets to 209.141.77.194, which
then goes to the mail server. I can now telnet to your mail server
(although it responds with 220 SMTP/cmap ready_________________..., which
sounds like a non-IMail mail server; IMail does respond on the POP3 port
though).
>
> If users can connect via POP3/IMAP, but it is slow and times out, it
probably isn't a DNS issue.
>
> I'd also have to rule out the router now, as it seems to be working all
right, and almost certainly wouldn't interfere with POP3/IMAP traffic but
not SMTP/web traffic. That sounds suspiciously like a firewall issue.
> -Scott
>
> ---------- Original Message ----------------------------------
> From: "Patrick Chin" <[EMAIL PROTECTED]>
> Reply-To: [EMAIL PROTECTED]
> Date: Fri, 18 Aug 2000 12:36:23 -0400
>
> I'd checked my DNS Servers, and did a ping and traceroute from an external
> unix shell.
> I am not getting any TTL expired in transit error, nor am I seeing a loop
> anywhere. Could it be on your end?
>
> To Recap:
> Our users from Florida cannot access our IMail Server except by using the
> Web Interface. POP and IMAP will timeout while trying to download the
email.
> I'd checked the DNS servers on our end, and pinged as well as tracerouted
to
> our mail server from an external unix shell, and it's working as expected.
> No loops, and no TTL expiration....
>
> What else can be causing this problem?
>
>
> Also, by the looks of it, our users can send mail with no problem. I see
> email from their accounts in the queue all the time.
>
> Thanks
>
> -Pat
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of
> [EMAIL PROTECTED]
> Sent: Thursday, August 17, 2000 02:33 PM
> To: [EMAIL PROTECTED]
> Subject: RE: [IMail Forum] Problem downloading mail
>
>
> Is this mail.novaratech.com you're talking about? First, you should note
> that you have 2 MX records for mail.novaratech.com -- if it is one server,
> there should only be one MX record (although it won't do any harm to have
it
> there).
>
> Trying to ping mail.novaratech.com returns a "TTL expired in transit",
which
> likely means a routing loop. In fact, a "tracert 209.141.79.234" shows it
> going from 209.140.169.85 to 209.140.169.81 back to 209.140.169.85. So
you
> do have a routing problem. Packets are never reaching the IMail server.
> -Scott
>
> ---------- Original Message ----------------------------------
> From: "Patrick Chin" <[EMAIL PROTECTED]>
> Reply-To: [EMAIL PROTECTED]
> Date: Thu, 17 Aug 2000 13:10:22 -0400
>
> ports 21 and 113 has been open. This problem just started happening when
we
> moved from MS Exchange to IMail.
> -Pat
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Len Conrad
> Sent: Thursday, August 17, 2000 12:24 PM
> To: [EMAIL PROTECTED]
> Subject: Re: [IMail Forum] Problem downloading mail
>
>
>
> >I have IMail 6.04 setup here on our servers. All our users from within
the
> >firewall can get to their email with no problem. THe problem is our users
> >from outside the firewall. They have problems ranging from not being able
> to
> >download, to mail client freezing to simply cannot see our servers (ping
> >comes back saying destination unreachable).
>
> This is not an Imail pb.
>
> Check with your firewall vendor and docs about how to open the
> firewall to permit SMTP and POP3 protocols through.
>
> search ipswitch knowlege base for "firewall"
>
> Len
>
>
>
>
> http://BIND8NT.MEIway.com: ISC BIND 8.2.2 p5 installable binary for NT4
> http://IMGate.MEIway.com: Build free, hi-perf, anti-spam mail gateways
>
> Please visit http://www.ipswitch.com/support/mailing-lists.html
> to be removed from this list.
>
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