[isalist] Re: SMTP Connection Closed
- From: "Thor (Hammer of God)" <thor@xxxxxxxxxxxxxxx>
- To: "isalist@xxxxxxxxxxxxx" <isalist@xxxxxxxxxxxxx>
- Date: Thu, 18 Jan 2007 18:24:08 -0800
http://www.ISAserver.org
-------------------------------------------------------
What actually happens when the telnet session is initiated? Do you see
anything? Any connect at all?
t
On 1/18/07 6:10 PM, "ISA" <ISA@xxxxxxxxxxxxxxxx> spoketh to all:
> http://www.ISAserver.org
> -------------------------------------------------------
>
> Thanks guys - I'll follow the article is see what goes -
>
> Did anyone have any problems actually connecting?
>
> I also thought of MTU issues. Two of the sites that can not connect; one
> is fronted with a SonicWall, the other a Linksys (stop, don't even say
> it... I know).
>
>
>
> Joseph Danielsen, MCSA-Messaging, MCP
>
> -----Original Message-----
> From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx]
> On Behalf Of Greg Mulholland
> Posted At: Thursday, January 18, 2007 8:58 PM
> Posted To: ISA
> Conversation: [isalist] Re: SMTP Connection Closed
> Subject: [isalist] Re: SMTP Connection Closed
>
> http://www.ISAserver.org
> -------------------------------------------------------
>
> I'm wondering if he is experiencing any other signs of flaky internet
> connection. Like in browsing etc etc. Ive seen mtu issues do this.
>
> Greg
> ----- Original Message -----
> From: "Thor (Hammer of God)" <thor@xxxxxxxxxxxxxxx>
> To: <isalist@xxxxxxxxxxxxx>
> Sent: Friday, January 19, 2007 12:49 PM
> Subject: [isalist] Re: SMTP Connection Closed
>
>
>> http://www.ISAserver.org
>> -------------------------------------------------------
>>
>> But that wouldn't have anything at all to do with telnetting to 25,
> which
>> I
>> can do, but I now see that others cannot. A blacklist or etc will not
>> affect that.
>>
>> t
>>
>>
>> On 1/18/07 4:29 PM, "Amy Babinchak" <amy@xxxxxxxxxxxxxxxxxxxxxxxxxx>
>> spoketh
>> to all:
>>
>>> It only effects incoming email.
>>>
>>> You can get around it by using a smarthost. Your cable company
> probably
>>> allows
>>> you to use their server for such purpose. That's how I get around it.
>>>
>>> ________________________________
>>>
>>> From: isalist-bounce@xxxxxxxxxxxxx on behalf of ISA
>>> Sent: Thu 1/18/2007 7:22 PM
>>> To: isalist@xxxxxxxxxxxxx
>>> Subject: [isalist] SMTP Connection Closed
>>>
>>>
>>> I thought that would affect my outgoing mail - not incoming!
>>>
>>> <unfortunately I can't get a static IP for another few months, I will
>
>>> then>
>>>
>>> Joseph Danielsen, MCSA-Messaging, MCP
>>> Network Blade Inc.
>>> 49 Marcy Street
>>> Somerset, NJ 08873
>>> 732-213-0600
>>> www.networkblade.com <http://www.networkblade.com/>
>>>
>>>
>>>
> <https://harbor.bounceme.net/Exchange/amy/Drafts/RE:%20[isalist]%20SMTP%
> 20Conn
>>> ection%20Closed.EML/1_multipart/image001.jpg>
>>>
> <https://harbor.bounceme.net/Exchange/amy/Drafts/RE:%20[isalist]%20SMTP%
> 20Conn
>>> ection%20Closed.EML/1_multipart/image002.jpg>
>>> ________________________________
>>>
>>> From: isalist-bounce@xxxxxxxxxxxxx
> [mailto:isalist-bounce@xxxxxxxxxxxxx]
>>> On
>>> Behalf Of Amy Babinchak
>>> Sent: Thursday, January 18, 2007 7:20 PM
>>> To: isalist@xxxxxxxxxxxxx
>>> Subject: RE: [isalist] SMTP Connection Closed
>>>
>>> according to dsnstuff.com you are listed on 3 blacklists and have no
>>> reverse
>>> DNS entry. That's enough right there to cause you to have
> inconsistant
>>> incoming email issues.
>>>
>>> ________________________________
>>>
>>> From: isalist-bounce@xxxxxxxxxxxxx on behalf of ISA
>>> Sent: Thu 1/18/2007 7:06 PM
>>> To: isalist@xxxxxxxxxxxxx
>>> Subject: [isalist] SMTP Connection Closed
>>> Amy:
>>> DNS seems to be working (mail.networkblade.com resolves to the
> correct
>>> IP),
>>> "I" am not blacklisting and I don't know how to Grey list.
>>>
>>> The ISP (cable company) is always suspect of everything else.
>>>
>>> Joseph Danielsen, MCSA-Messaging, MCP
>>> Network Blade Inc.
>>> 49 Marcy Street
>>> Somerset, NJ 08873
>>> 732-213-0600
>>> ________________________________
>>>
>>> From: isalist-bounce@xxxxxxxxxxxxx
> [mailto:isalist-bounce@xxxxxxxxxxxxx]
>>> On
>>> Behalf Of Amy Babinchak
>>> Sent: Thursday, January 18, 2007 7:02 PM
>>> To: isalist@xxxxxxxxxxxxx
>>> Subject: RE: [isalist] SMTP Connection Closed
>>>
>>> So assuming that this used to work you've eliminated the other
> obvious
>>> things
>>> besides filtering like bad DNS, flakey ISP, blacklisting, grey
> listing,
>>> etc?
>>>
>>> ________________________________
>>>
>>> From: isalist-bounce@xxxxxxxxxxxxx on behalf of ISA
>>> Sent: Thu 1/18/2007 6:46 PM
>>> To: isalist@xxxxxxxxxxxxx
>>> Subject: [isalist] SMTP Connection Closed
>>> Good questions!
>>> Thor: I was referring to Exchange filtering NOT ISA. I was not aware
> of
>>> the
>>> NOOP config in the SMTP filter properties.
>>> Amy: By client I mean another account with a separate ISP and
> Exchange
>>> server
>>> somewhere else in the world. i.e. NJ.
>>>
>>> Joseph Danielsen, MCSA-Messaging, MCP
>>> Network Blade Inc.
>>> 49 Marcy Street
>>> Somerset, NJ 08873
>>> 732-213-0600
>>> www.networkblade.com <http://www.networkblade.com/>
>>>
>>>
>>>
> <https://harbor.bounceme.net/Exchange/amy/Drafts/RE:%20[isalist]%20SMTP%
> 20Conn
>>> ection%20Closed.EML/1_multipart/%20>
>>>
> <https://harbor.bounceme.net/Exchange/amy/Drafts/RE:%20[isalist]%20SMTP%
> 20Conn
>>> ection%20Closed.EML/1_multipart/%20>
>>> ________________________________
>>>
>>> From: isalist-bounce@xxxxxxxxxxxxx
> [mailto:isalist-bounce@xxxxxxxxxxxxx]
>>> On
>>> Behalf Of Thor (Hammer of God)
>>> Posted At: Thursday, January 18, 2007 6:40 PM
>>> Posted To: ISA
>>> Conversation: [isalist] SMTP Connection Closed
>>> Subject: [isalist] Re: SMTP Connection Closed
>>>
>>> Just to make sure we're saying the same thing.. Not filtering via
>>> Exchange and
>>> 3rd party- the ISA SMTP filter. You disabled that?
>>>
>>> t
>>>
>>>
>>> On 1/18/07 3:30 PM, "ISA" <ISA@xxxxxxxxxxxxxxxx> spoketh to all:
>>> Thor - thanks but I've turned off ALL filtering via Exchange and 3rd
>>> party
>>> software.
>>>
>>> I've tried connecting (via telnet) from multiple locations (ISP) and
> from
>>> Exchange 2003 and SBS 2003. Some work and Some don't. When watching
> the
>>> ISA
>>> real-time logs, the connection is initiated then 5 seconds later it
> is
>>> then
>>> closed by the Exchange publishing rule.
>>>
>>> A 12-pack for the one who gets this one!
>>>
>>> <and this is on my own server/network>
>>>
>>>
>>> Joseph Danielsen, MCSA-Messaging, MCP
>>> Network Blade Inc.
>>> 49 Marcy Street
>>> Somerset, NJ 08873
>>> 732-213-0600
>>> www.networkblade.com <http://www.networkblade.com/>
>>> <http://www.networkblade.com/>
>>>
>>>
>>>
> <https://harbor.bounceme.net/Exchange/amy/Drafts/RE:%20[isalist]%20SMTP%
> 20Conn
>>> ection%20Closed.EML/1_multipart/%20>
>>>
> <https://harbor.bounceme.net/Exchange/amy/Drafts/RE:%20[isalist]%20SMTP%
> 20Conn
>>> ection%20Closed.EML/1_multipart/%20>
>>> ________________________________
>>>
>>> From: isalist-bounce@xxxxxxxxxxxxx
> [mailto:isalist-bounce@xxxxxxxxxxxxx]
>>> <mailto:isalist-bounce@xxxxxxxxxxxxx%5d> On Behalf Of Thor (Hammer
> of
>>> God)
>>> Posted At: Thursday, January 18, 2007 6:22 PM
>>> Posted To: ISA
>>> Conversation: [isalist] SMTP Connection Closed
>>> Subject: [isalist] Re: SMTP Connection Closed
>>>
>>> Check your SMTP filter settings for command lengths... NOOP has been
>>> problematic before at its default of 6 - I changed mine to 20 after
>>> sniffing
>>> traffic and determining some older Exchange boxes were padding NOOP
> with
>>> spaces..
>>>
>>> t
>>>
>>>
>>> On 1/18/07 1:46 PM, "ISA" <ISA@xxxxxxxxxxxxxxxx> spoketh to all:
>>> Hope someone can help!
>>>
>>> I think this is an ISA 2004 (patched) issue.
>>>
>>> From some clients I can send/receive email just fine (and telnet port
>
>>> 25). But
>>> from other clients I can not. I monitored the ISA logs and observed
> the
>>> connection initiated then being closed.
>>>
>>> From Exchange 2003 box I shut of IMF and GFI services - still not
> luck
>>> receiving email or telnet'ing from a particular client.
>>>
>>> Any ideas would be greatly appreciated.
>>>
>>> Respectfully
>>>
>>>
>>> Joseph Danielsen, MCSA-Messaging, MCP
>>> Network Blade Inc.
>>> 49 Marcy Street
>>> Somerset, NJ 0887
>>> 732-213-0600
>>>
>>
>>
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>>
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