If you can send the EHLO command from outside and receive mail = correctly except from gmail, then it seems it is not a server or firewall problem = is none changed in any way (no update, ...)
You could try to set some tcp dump/analysis between the zyxel firewall = and the modem and between the firewall and your xmail server and then send = some mail from gmail to your server. The two combined captures could help you confirm where is no problem in = your installation. First think to find is the 'EHLO' smtp tcp packet reaching the = firewall. If you can see it reaching you firewall, and you can see it on = firwall/xmail server side, then it seems to be a xmail server problem/filtering. If the packet is seen at firewall input and not at xmail server input, = then it is a firewall problem (some auto-update ? some rules or parameters = lost ? check firewall config, eventually reset to manufacturer and restart = config from scratch, sometimes it help) If you can't see the EHLP packet at firewall input port, then it's a = isp or gmail problem. Perhaps there is only one gmail server that have the = problem and at this time it is the current gmail server selected to serve your domain (don't know how gmail select the sending server, it's just a = idea), or isp denied the gmail ip for some obscur reason. But you have th = proof that the packet never reach you. Francis >-----Message d'origine----- >De : [EMAIL PROTECTED] >[mailto:[EMAIL PROTECTED] la part de Matic >Envoy=E9 : jeudi 12 juillet 2007 07:52 >=C0 : [email protected] >Objet : [xmail] Re: problem with gmail > > > The firewall is a Zyxel Zywall5 and the problem occoured=20 >aprox. 14 days ago >and we haven't touched the firewall in any way for at least couple of >months.I have also come to this conclusion but then it must be=20 >something on >the way from google to our ISP. From every available network I=20 >could try >EHLOcommand works just fine. Mail from other well known public=20 >providers >works normal. > > > > >Rob Arends pravi: Gut feel says there is a firewall=20 >(appliance?) that is >forcing a limited set of SMTP commands. Like HELO, but not=20 >EHLO. The Cisco >PIX does this if you have 'fixup smtp' on. Just turn it off.=20 >It will also >allow authenticated SMTP too then. If not a FW, then dunno!! Rob :-) >_________________________________________________ It might=20 >look like I'm >doing nothing, but on a cellular level, I'm quite busy. -----Original >Message----- From: [EMAIL PROTECTED] >[mailto:[EMAIL PROTECTED] On Behalf Of Matic=20 >Sent: Monday, >July 09, 2007 8:07 PM To: [EMAIL PROTECTED] Subject:=20 >[xmail] problem >with gmail Hi, we have a problem with sending mail from gmail=20 >accounts to >ourserver. Here is a delivery report from gmail: >----------------------------------------------------- Subject: = Delivery >Status Notification (Failure) This is an automatically=20 >generated Delivery >Status Notification Delivery to the following recipient failed=20 >permanently: >[EMAIL PROTECTED] Technical details of permanent failure:=20 >TEMP_FAILURE: Connection >was dropped by remote host (SENT_EHLO) >----------------------------------------------------- There is=20 >no entry in >log for this connection (which is kind of logical since the=20 >connection was >presumably dropped before any useful data)T We are only using glst. = Any >ideason how to threat this problem? Matic - To unsubscribe=20 >from this list: >send the line "unsubscribe xmail" in the body of a message to >[EMAIL PROTECTED] For general help: send the line=20 >"help" in the >bodyof a message to [EMAIL PROTECTED] - To=20 >unsubscribe from this >list: send the line "unsubscribe xmail" in the body of a message to >[EMAIL PROTECTED] For general help: send the line=20 >"help" in the >bodyof a message to [EMAIL PROTECTED] > >--- Links --- > 1 mailto:[EMAIL PROTECTED] > 2 mailto:[EMAIL PROTECTED] > 3 mailto:[email protected] > 4 mailto:[EMAIL PROTECTED] > 5 mailto:[EMAIL PROTECTED] > 6 mailto:[EMAIL PROTECTED] > 7 mailto:[EMAIL PROTECTED] >- >To unsubscribe from this list: send the line "unsubscribe xmail" in >the body of a message to [EMAIL PROTECTED] >For general help: send the line "help" in the body of a message to >[EMAIL PROTECTED] > - To unsubscribe from this list: send the line "unsubscribe xmail" in the body of a message to [EMAIL PROTECTED] For general help: send the line "help" in the body of a message to [EMAIL PROTECTED]
