Mailers and records MX
- From: "Mike Kercher" <mike (at) vesol.com>
- Date: Tue, 20 Jun 2006 13:18:37 -0500
centos-bounces (at) centos.org <> scribbled on Tuesday, June 20, 2006 2:18
PM:
> More details:
>
> 1. The 3 servers are in diferents networks...
> 2. My higher's mx servers (mx 15 and mx 20) receive a lot of
> legitimate mail.. It also received a lot of spam too.... :-(
> 3. MX1 server is in the main network (backbone).. It's the
> most accesible network of the others Mx's 4. Mx 2 and Mx 3
> are constantly receiving messages... Like if the dns were the
> same MX record for the three servers..
>
> Regards
> Israel
>
> -----Mensaje original-----
> De: replies-lists-centos (at) listmail.innovate.net
> [mailto:replies-lists-centos (at) listmail.innovate.net]
> Enviado el: Tuesday, June 20, 2006 1:04 PM
> Para: SV-Israel Garcia
> Asunto: Re: [CentOS] Mailers and records MX
>
> are you seeing spam or "real" mail through the higher ordinal
> MX hosts?
>
>
> spammers often target higher ordinal MX hosts because they
> assume that there are fewer blocks there (e.g., the user base
> isn't checked).
>
> if it's "real" mail, it can simply be that the lower ordinal
> MX hosts are seen as slow by some sender's mail hosts.
>
> - Rick
>
>
>
>
> ------------ Original Message ------------
>> Date: Tuesday, June 20, 2006 02:01:06 PM -0500
>> From: israel.garcia (at) cimex.com.cu
>> To: centos (at) centos.org
>> Subject: [CentOS] Mailers and records MX
>>
>> I've installed bind on centos 4.3.. This is a part of my
> config file:
>>
>> example.com. IN MX 10 mail.example.com.
>> example.com. IN MX 15 mail1.example.com.
>> example.com. IN MX 20 mail2.example.com.
>>
>> mail.example.com. IN A x.x.x.x
>> mail1.example.com. IN A x.x.x.x
>> mail2.example.com. IN A x.x.x.x
>>
>>
>> Every seems to be fine, but I'm constantly receiving
> messages in my 3
>> MX servers, even if mail.example.com (the less MX record)
> is available
>
>> waiting for connections from outside... Why if my less mx record
>> server is available the others servers are constantly receiving
>> messages for my domain?
>>
>> Thanks for your time
>> Israel
I'd just install MailScanner on all 3 and not worry about what mail
comes in where.
Mike
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