> From: "Harris, Jason (DIS)" <[log in to unmask]>
> Reply-To: LISTSERV site administrators' forum
> <[log in to unmask]>
> Date: Fri, 24 Feb 2006 14:32:19 -0800
> To: [log in to unmask]
> Subject: Re: Windows XP Firewall
> 
> Your Listserv works and is accepting mail normally.   I successfully got a
> thanks/welcome exchange.
> 
> If there is blocking happening, it is somewhere in knifecenter.com, but it
> is not happening on store.knifecenter.com
> 
> 
> It also looks like two of your MX's point to the same address.  Do you have
> multiple email domains being serviced by the same mail agent on
> listserv/store/mac ?
> 
mail.knifecenter.com = my linux postfix mail server. this is my main mail
server. it is located "in house" on it's own ip address: 70.88.225.1

store.knifecenter.com - my listserv server. it is also located "in house"
and is located behind a firewall router. the ip address is: 70.88.225.6

omega.knifecenter.com = my backup mail server. this server is located at a
different location outside of my internal network.

mac.knifecenter.com = outdated mail server. i should remove this record.

A note that I should've mentioned before: I have 5 static ip addresses
dedicated to me from Comcast: 70.88.225.1-70.88.225.5. 70.88.225.6 is the
address of the router that I currently have (an SMC broadband router).
70.88.225.6 uses NAT routing to direct SMTP traffic to my listserv server,
in house.

It looks like when mail from inside my network is sent, either automatically
by Listserv or manually, when I just use Outlook, the mail.knifecenter.com
postfix server blocks this traffic.

Does anyone have any suggestions?

Ki 

> Jason Harris
> 
> 
> listserv:/var/log # dig mac.knifecenter.com
> 
> ; <<>> DiG 9.2.3 <<>> mac.knifecenter.com
> ;; global options:  printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 13858
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 0
> 
> ;; QUESTION SECTION:
> ;mac.knifecenter.com.           IN      A
> 
> ;; ANSWER SECTION:
> mac.knifecenter.com.    86347   IN      A       70.88.225.6
> 
> 
> 
> 
> 
> 
> -----Original Message-----
> From: LISTSERV give-and-take forum [mailto:[log in to unmask]] On
> Behalf Of Ki Song
> Sent: Friday, February 24, 2006 13:44
> To: [log in to unmask]
> Subject: Re: Windows XP Firewall
> 
>> From: Valdis Kletnieks <[log in to unmask]>
>> Reply-To: LISTSERV site administrators' forum
>> <[log in to unmask]>
>> Date: Fri, 24 Feb 2006 16:10:16 -0500
>> To: [log in to unmask]
>> Subject: Re: Windows XP Firewall
>> 
>> On Fri, 24 Feb 2006 15:43:27 EST, Ki Song said:
>> 
>>> Why would other functions of LISTSERV work? I can e-mail my listserv
>>> ([log in to unmask]) and subscribe/unsubscribe from the
>>> listserv without any problems.
>> 
>> The MX list for [log in to unmask]:
>> 
>> knifecenter.com.        86400   IN      MX      40 mac.knifecenter.com.
>> knifecenter.com.        86400   IN      MX      10 mail.knifecenter.com.
>> knifecenter.com.        86400   IN      MX      20 store.knifecenter.com.
>> knifecenter.com.        86400   IN      MX      30 omega.knifecenter.com.
>> 
>> There is no MX list for [log in to unmask] - as a result, mail
>> will go to the A record only.
>> 
>> End result - mail for knifecenter.com will succeed if *any* of the 4
>> addresses are accepting mail, but for @store. it will bomb out if that
>> one address isn't listening for inbound mail.
> 
> Sorry. It's when I send mail to [log in to unmask], not
> [log in to unmask]
> 
> Does that make a difference? Shouldn't mail sent to
> [log in to unmask] be sent directly to the listserv (which is on
> the store.knifecenter.com server)?