http://www.ISAserver.org ------------------------------------------------------- More recent versions of Sonicwall do have a packet capture capability. John T eServices For You "Life is a succession of lessons which must be lived to be understood." Ralph Waldo Emerson (1802-1882) > -----Original Message----- > From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of > Thomas W Shinder > Sent: Thursday, January 18, 2007 6:47 PM > To: isalist@xxxxxxxxxxxxx > Subject: [isalist] Re: SMTP Connection Closed > > http://www.ISAserver.org > ------------------------------------------------------- > > Time for network traces. Too bad the crapware Linksys and Sonicwall > don't have built in packet sniffers. > > Thomas W Shinder, M.D. > Site: www.isaserver.org > Blog: http://blogs.isaserver.org/shinder/ > Book: http://tinyurl.com/3xqb7 > MVP -- Microsoft Firewalls (ISA) > > > > > -----Original Message----- > > From: isalist-bounce@xxxxxxxxxxxxx > > [mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Greg Mulholland > > Sent: Thursday, January 18, 2007 8:42 PM > > To: isalist@xxxxxxxxxxxxx > > Subject: [isalist] Re: SMTP Connection Closed > > > > http://www.ISAserver.org > > ------------------------------------------------------- > > > > gotta be some sort of connect limit, i would have thought > > noop as well. Have > > you customised any of your smtp rules or smtp filters beyond > > the normal > > setup? have you customised any of the settings exchange > > connection limit > > settings > > > > whats the hardware specs of the exchange box and isa box? > > > > how long do you wait for the before banner before closing the window? > > > > > > Greg > > ----- Original Message ----- > > From: "ISA" <ISA@xxxxxxxxxxxxxxxx> > > To: <isalist@xxxxxxxxxxxxx> > > Sent: Friday, January 19, 2007 1:29 PM > > Subject: [isalist] SMTP Connection Closed > > > > > > http://www.ISAserver.org > > ------------------------------------------------------- > > > > > > Nothing at all - > > I enter telnet mail.domain.com 25 (hit enter) the line disappears and > > the curser just sits there and blinks - no banner - nothing. If I hit > > enter again it goes back to the C:\ prompt. > > > > I tried the steps in that article mentioned earlier - but I can't get > > passed the first step (mentioned above). However, I see the port 25 > > attempt on the ISA firewall logs - then is CLOSES after 5 seconds. > > > > > > Joseph Danielsen, MCSA-Messaging, MCP > > > > Network Blade Inc. > > > > 49 Marcy Street > > > > Somerset, NJ 08873 > > > > 732-213-0600 > > > > www.networkblade.com > > > > > > > > > > > > > > -----Original Message----- > > From: isalist-bounce@xxxxxxxxxxxxx > > [mailto:isalist-bounce@xxxxxxxxxxxxx] > > On Behalf Of Thor (Hammer of God) > > Posted At: Thursday, January 18, 2007 9:24 PM > > Posted To: ISA > > Conversation: [isalist] SMTP Connection Closed > > Subject: [isalist] Re: SMTP Connection Closed > > > > 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[isalis > > t]%20SMTP% > > > 20Conn > > >>> ection%20Closed.EML/1_multipart/image001.jpg> > > >>> > > > > > <https://harbor.bounceme.net/Exchange/amy/Drafts/RE:%20[isalis > > t]%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[isalis > > t]%20SMTP% > > > 20Conn > > >>> ection%20Closed.EML/1_multipart/%20> > > >>> > > > > > <https://harbor.bounceme.net/Exchange/amy/Drafts/RE:%20[isalis > > t]%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[isalis > > t]%20SMTP% > > > 20Conn > > >>> ection%20Closed.EML/1_multipart/%20> > > >>> > > > > > <https://harbor.bounceme.net/Exchange/amy/Drafts/RE:%20[isalis > > t]%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 > > >>> > > >> > > >> > > >> ------------------------------------------------------ > > >> List Archives: //www.freelists.org/archives/isalist/ > > >> ISA Server Newsletter: > > http://www.isaserver.org/pages/newsletter.asp > > >> ISA Server Articles and Tutorials: > > >> http://www.isaserver.org/articles_tutorials/ > > >> ISA Server Blogs: http://blogs.isaserver.org/ > > >> ------------------------------------------------------ > > >> Visit TechGenix.com for more information about our other 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