Bristol Digest, Vol 635, Issue 3

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Today's Topics:

1. Re: DNS oddities (Martin Moore)


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Message: 1
Date: Fri, 04 Mar 2016 13:11:29 +0000
From: Martin Moore <martinm@it-helps.co.uk>
To: Bristol and Bath Linux User Group <bristol@mailman.lug.org.uk>
Subject: Re: [bristol] DNS oddities
Message-ID: <7981464F-D25D-4FBE-87CD-8080D2298DAD@it-helps.co.uk>
Content-Type: text/plain; charset="utf-8"

Makes sense.

How do I do that :)


From: Bristol <bristol-bounces@mailman.lug.org.uk> on behalf of nick robinson <nick@njrobinson.net>
Reply-To: Bristol and Bath Linux User Group <bristol@mailman.lug.org.uk>
Date: Friday, 4 March 2016 at 12:41
To: Bristol and Bath Linux User Group <bristol@mailman.lug.org.uk>
Subject: Re: [bristol] DNS oddities

you will have to update it to be relay only if you want all you mail to go to google.
otherwise it may well still be delivering mail locally regardless of your dns setup

On 4 March 2016 at 12:33, Martin Moore <martinm@it-helps.co.uk> wrote:
Mind you, I still need smtp running for outgoing email don?t I?


From: Bristol <bristol-bounces@mailman.lug.org.uk> on behalf of nick robinson <nick@njrobinson.net>
Reply-To: Bristol and Bath Linux User Group <bristol@mailman.lug.org.uk>
Date: Friday, 4 March 2016 at 11:32
To: Bristol and Bath Linux User Group <bristol@mailman.lug.org.uk>
Subject: Re: [bristol] DNS oddities

Some smtp servers (and even network switches) will cache the dns result beyond what they should do.
If your DNS is set up correctly turn off your old mail server and force any new mail to recheck the settings.

On 4 March 2016 at 10:47, Martin Moore <martinm@it-helps.co.uk> wrote:
I recently moved our email from self hosted (Debian) to Google (6 days ago).

However, I?m still getting a few emails per day to the original self-hosted mailboxes as well as Google. DNS (hosted by dnsmadeeasy) only has the Google MX records in.

Some (but not all) are from our own servers ? stuff like nagios alerts. Is there any config that needs to change on our servers to prevent ?internal? emails getting incorrectly routed? DNS is probably still running on our own servers even though it?s not used. I guess that could well explain the internal mail issues?

Surely the DNS must have propagated everywhere by now?
I?m a bit baffled ? any ideas?


Ta,

Martin.





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