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Today's Topics:
1. Re: DNS oddities (Martin Moore)
2. Re: DNS oddities (Martin Moore)
3. Re: DNS oddities (Martin Moore)
4. Re: DNS oddities (nick robinson)
----------------------------------------------------------------------
Message: 1
Date: Fri, 04 Mar 2016 12:31:35 +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: <374B72F5-44A5-4D8C-864C-EAD3C0A27338@it-helps.co.uk>
Content-Type: text/plain; charset="UTF-8"
I did find one server using localhost for DNS which ?may? be the cause.
Using postfix and exams (not on the same box!)
On 04/03/2016, 10:58, "Bristol on behalf of Amias Channer" <bristol-bounces@mailman.lug.org.uk on behalf of me@amias.net> wrote:
>Hello Martin,
>
>You could check this by ssh'ing to the box in question and running dig
>or nslookup.
>
>dig mx domainname.com
>
>will show you what DNS gives your box for that domain
>
>if that doesn't seem to make sense then maybe you have something in /etc/hosts
>
>also check /etc/resolv.conf to see what nameservers your box is using.
>
>Without knowing what email server you where running i can't suggest a
>solution but
>if it is not longer the destination for mail for that domain then it
>will need to be told so.
>Just changing DNS records won't do this.
>
>Cheers
>Amias
>
>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.
>>
>>
>>
>>
>>
>> _______________________________________________
>> Bristol mailing list
>> Bristol@mailman.lug.org.uk
>> https://mailman.lug.org.uk/mailman/listinfo/bristol
>
>_______________________________________________
>Bristol mailing list
>Bristol@mailman.lug.org.uk
>https://mailman.lug.org.uk/mailman/listinfo/bristol
------------------------------
Message: 2
Date: Fri, 04 Mar 2016 12:32:42 +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: <50868EF0-1F1D-4E52-8C88-E8DA972111DA@it-helps.co.uk>
Content-Type: text/plain; charset="utf-8"
Still need the old mail servers running ? at least until I?ve moved the helpdesk into the cloud later today! Only for .co.uk addresses though.
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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Bristol@mailman.lug.org.uk
https://mailman.lug.org.uk/mailman/listinfo/bristol
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Message: 3
Date: Fri, 04 Mar 2016 12:33:21 +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: <404ECA87-F907-4608-B75E-E0CC9009C22A@it-helps.co.uk>
Content-Type: text/plain; charset="utf-8"
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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Bristol@mailman.lug.org.uk
https://mailman.lug.org.uk/mailman/listinfo/bristol
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Message: 4
Date: Fri, 4 Mar 2016 12:41:34 +0000
From: nick robinson <nick@njrobinson.net>
To: Bristol and Bath Linux User Group <bristol@mailman.lug.org.uk>
Subject: Re: [bristol] DNS oddities
Message-ID:
<CADo8qK5q2c24C9aRwZh_xd7PWW4VV4Cotpt7FqLuXBuM49DBWg@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
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.
>>
>>
>>
>>
>>
>> _______________________________________________
>> Bristol mailing list
>> Bristol@mailman.lug.org.uk
>> https://mailman.lug.org.uk/mailman/listinfo/bristol
>
>
> _______________________________________________ Bristol mailing list
> Bristol@mailman.lug.org.uk
> https://mailman.lug.org.uk/mailman/listinfo/bristol
>
> _______________________________________________
> Bristol mailing list
> Bristol@mailman.lug.org.uk
> https://mailman.lug.org.uk/mailman/listinfo/bristol
>
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