[BlueOnyx:03592] Re: Mail Bounces sometimes

[Darrell D. Mobley]

> -----Original Message-----
> From: blueonyx-bounces at blueonyx.it [mailto:blueonyx-bounces at blueonyx.it]
> On Behalf Of Michael Stauber
> Sent: Sunday, February 14, 2010 1:15 AM
> To: BlueOnyx General Mailing List
> Subject: [BlueOnyx:03590] Re: Mail Bounces sometimes
> 
> If your site is named "www.company.com" in the GUI and has the Email
> Server Alias "company.com", then this is the minimum set of DNS records 
> you ought to have:
> 
>  company.com	 	---- A Record ----> 	 <IP-Address>
>  www.company.com	---- A Record ---->	 <IP-Address>
>  company.com	 	---- MX Record --->	 www.company.com (*)
>  www.company.com	---- MX Record --->	 www.company.com (*)
>  <IP-Address>	 	---- Reverse ----->	 company.com (***)
> 
> (*) = This MUST be the exact name (including the hostname part) of the
> domain as shown in the GUI interface.

Are you saying that you must never deviate from the MX record for
company.com pointing to www.company.com, or if you have this minimum setup?
If you have an A record mail.company.com, is it ok for the MX record for
company.com to then point to mail.company.com?
 
> (***) You must have reverse delegation authority for that network 
> address in order for this to work. Or ask your network provider to set 
> up a reverse for you. Or at the worst check that your IP has a reverse
> record already.

And the rule is only one reverse pointer per IP, otherwise it wouldn't work,
correct?  Do many network providers allow customers to set their own reverse
records?  How would one know, without asking the provider?