Email Server and DNS
nobody at snovc.com
Sun Nov 3 16:49:32 UTC 2013
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On 11/3/2013 8:39 AM, rwebb at ropeguru.com wrote:
> So I figured a little break from the NSA was in order.
> I am looking for some info on current practice for an email server
> and SMTP delivery. It has been a while since I have had to setup an
> email server and I have been tasked with setting up a small one for
> a friend. My question centers around the server sending outgoing
> email and the current practices requirements for other servers to
> accept email Things like rDNS, SPF records, etc...
> I am pretty much set on the issue of incoming spam and virus.
> Probably overkill but it is checked at the Sophos UTM firewall and
> at the email server itself.
MX, PTR, and SPF are really all you need. I would recommend you go a
step further and use DKIM, ADSP, and DMARC. It will help keep asshat
spammers from flaming your domain all over the internet.
I use http://www.unlocktheinbox.com/ to verify my configuration.
- -Bret Taylor
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