So you want me to create an MX record for a server that is not reachable
form the Internet just so that it passes the test of making sure that
the address that is connecting to your SMTP port is listed as an MX of
the e-mail senders domain???
Hmmm... hope you don't have a secondary MX server for your domain.
Because if you do when it tries to send mail to your primary it's IP
address won't be listed as an MX for the e-mail senders domain.
Also, taking your hotmail.com as an example. I just sent myself a
message from hotmail, my server received the message from 64.4.37.209.
Here's the list of hotmail.com MX servers:
mx1.hotmail.com. 2304 IN A 65.54.166.99
mx1.hotmail.com. 2304 IN A 64.4.50.99
mx1.hotmail.com. 2304 IN A 65.54.252.99
mx2.hotmail.com. 2304 IN A 65.54.190.7
mx2.hotmail.com. 2304 IN A 65.54.254.145
mx2.hotmail.com. 2304 IN A 65.54.252.230
mx2.hotmail.com. 2304 IN A 65.54.166.230
mx3.hotmail.com. 2304 IN A 65.54.167.5
mx3.hotmail.com. 2304 IN A 64.4.50.239
mx3.hotmail.com. 2304 IN A 65.54.253.99
mx4.hotmail.com. 2304 IN A 65.54.253.230
mx4.hotmail.com. 2304 IN A 65.54.167.230
mx4.hotmail.com. 2304 IN A 65.54.190.230
mx4.hotmail.com. 2304 IN A 65.54.254.151
ns1.hotmail.com. 77457 IN A 216.200.206.140
ns2.hotmail.com. 77457 IN A 216.200.206.139
ns3.hotmail.com. 77457 IN A 209.185.130.68
ns4.hotmail.com. 77457 IN A 64.4.29.24
Don't see that IP in there do you???? Fails the test.... Not good.
It's not uncommon to have separate servers for sending and receiving
messages. So you won't always find MX records for the servers that
deliver messages to your server.
Bill
>----------
>From: Gustavo Galvan[SMTP:[EMAIL PROTECTED]
>Sent: Saturday, January 31, 2004 3:47 PM
>To: [EMAIL PROTECTED]
>Subject: [xmail] Re: accept mail from real MX
>
>
>Bill, there is no problem if you declare your 2 servers like valid MX in =
>your=20
>DNS. You can have multiple MX for a domain. Maybe your "front end" server=
>=20
>with a preference value of 10 and your internal server with 20.
>But your internal server must have a public ip address. If you not have a=
>=20
>public ip address, you can configure your fron-end server at gateway for=20
>internal server ("DefaultSMTPGateways" option in server.tab)
>Now, whats the problem ?
>
>Gustavo
>
>
>El S=E1b 31 Ene 2004 19:07, Bill Healy escribi=F3:
>> Sometimes it's not the MX that send mail out so this could cause
>> problems.
>> For example I have a front end server that receives mail, scans for spa=
>m
>> and Virus and then passes it on to my internal server. But when I
>> respond to an email it's my internal server that sends it directly to
>> the recipients server.
>>
>> Bill
>>
>> >----------
>>
>> From: =09Davide Libenzi[SMTP:[EMAIL PROTECTED]
>>
>> >Sent: =09Saturday, January 31, 2004 1:36 PM
>> >To: =09XMail mailing list
>> >Subject: =09[xmail] Re: accept mail from real MX
>> >
>> >On Sat, 31 Jan 2004, Gustavo Galvan wrote:
>> >> First, my configuration files (the basics for that question)
>> >>
>> >> In smtprelay.tab I have:
>> >> "127.0.0.1"=3D09"255.255.255.255"
>> >>
>> >> In server.tab I have:
>> >> "EnableAuthSMTP-POP3"=3D09"1"
>> >> "SMTP-RDNSCheck"=3D09"1"
>> >> "CheckMailerDomain"=3D09"1"
>> >>
>> >> but im receiving mail from [EMAIL PROTECTED], but sender ip address is =
>not
>> >> a=3D MX=3D20
>> >> for hotmail.com.
>> >> Is there a way to restrict incoming smtp to only authorized MX for a
>> >> doma=3D in ?
>> >
>> >No. But this is a useful feature to add IMO. Queued.
>> >
>> >
>> >
>> >- Davide
>> >
>> >
>
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