Do you increment your SOA number when you update dns ? did you dig from all your nameservers to see if they give you same information for your MX records ?
Another thing i like to do when i am over with dns configuration is make sure that everything in the report from this site: http://dnsreport.com/ is ok with no red or yellow :)
On Tuesday 20 June 2006 15:18, israel.garcia@cimex.com.cu wrote:
More details:
- The 3 servers are in diferents networks...
- 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@listmail.innovate.net [mailto:replies-lists-centos@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@cimex.com.cu To: centos@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
---------- End Original Message ----------
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