Need help with DNS Nameservers
I have a domain for my family email (and other things) mason-rose.ca The DNS is on a machine that is currently unstable (meaning I can't physically access it for 2 weeks, I can't ssh in, and it can't be blown away). Foolishly, both of the required DNS namesevers point to the same machine. Postfix on that machine was forwarding all our family email to various gmail accounts, and this is currently not working... mail is being dropped on the floor... partner is *NOT*HAPPY* (nor am I, but...). The Postfix was essentially forwarding dmason@mason-rose.ca to my gmail, my-partner@mason-rose.ca to her gmail, and everything-else@mason-rose.ca to both of us. This wasn't working perfectly, as email from gmail routed through this would take a very long time, or fail (because gmail didn't trust it coming sort-of from gmail and back to gmail). I was trying to set up mailgun.com to forward my email, which requires DNS records to be set up while continuing to use the postfix setup. So I would like to set up alternate nameservers, to get my mail flowing again. But with the postfix server dead, I don't know if mailgun will do all I want. So, first and foremost, I need DNS Servers that can host the DNS records. Any insight/help appreciated. Thanks ../Dave
On 11/02/2016 01:35 PM, David Mason via talk wrote:
I have a domain for my family email (and other things) mason-rose.ca <http://mason-rose.ca>
The DNS is on a machine that is currently unstable (meaning I can't physically access it for 2 weeks, I can't ssh in, and it can't be blown away). Foolishly, both of the required DNS namesevers point to the same machine. Postfix on that machine was forwarding all our family email to various gmail accounts, and this is currently not working... mail is being dropped on the floor... partner is *NOT*HAPPY* (nor am I, but...).
The Postfix was essentially forwarding dmason@mason-rose.ca <mailto:dmason@mason-rose.ca> to my gmail, my-partner@mason-rose.ca <mailto:my-partner@mason-rose.ca> to her gmail, and everything-else@mason-rose.ca <mailto:everything-else@mason-rose.ca> to both of us. This wasn't working perfectly, as email from gmail routed through this would take a very long time, or fail (because gmail didn't trust it coming sort-of from gmail and back to gmail).
I was trying to set up mailgun.com <http://mailgun.com> to forward my email, which requires DNS records to be set up while continuing to use the postfix setup. So I would like to set up alternate nameservers, to get my mail flowing again. But with the postfix server dead, I don't know if mailgun will do all I want.
So, first and foremost, I need DNS Servers that can host the DNS records.
Any insight/help appreciated.
Thanks ../Dave
generally most registrars will offer DNS services along with the registration. So you should be able to login to your registrar and setup your zone and be up and running within minutes. For a small static domain using the registrar is just about the easiest thing to do. -- Alvin Starr || voice: (905)513-7688 Netvel Inc. || Cell: (416)806-0133 alvin@netvel.net ||
| From: Alvin Starr via talk <talk@gtalug.org> 1) Alvin is right. | On 11/02/2016 01:35 PM, David Mason via talk wrote: | > I have a domain for my family email (and other things) mason-rose.ca | > <http://mason-rose.ca> | > | > The DNS is on a machine that is currently unstable (meaning I can't | > physically access it for 2 weeks, I can't ssh in, and it can't be blown | > away). [Don't rely on everything I say -- I haven't checked it carefully.] The DNS servers for mason-rose.ca are: sarg.ryerson.ca (141.117.18.116) ns.mason-rose.ca (135.23.243.200). Both answer pings. Only ns.mason-rose.ca seems to have sshd running. It could be that a ryerson firewall is blocking ssh for sarg. In any case, DNS seems to be working (I didn't check that both were working, only that something was working). The MX records point to sarg.ryerson.ca (141.117.18.116) mail.mason-rose.ca (135.23.243.200) Same machines, different names. Neither machine responds to a telnet to port 25 (unless I'm doing something wrong). Nothing responds on 141.117.18.116 but some firewall rule is blocking 135.23.243.200. Actually, both could be firewall rules but thee first would be "DROP" and the second would be "DENY". 141/8 is administered by RIPE NCC. So sarg isn't supposed to be in North America. But whois says that 141.116.0.0 - 141.129.255.255 is a non RIPE NCC managed block. Sarg seems to be in Ryerson somewhere. It has no entry in the reverse DNS. 135.23.242.0/23 is allocated to teksavvy. Whois says that the network name is "Cable - Pine Ridge(Oshawa)". I didn't think that one could get a static address from Teksavvy if your last mile was cable. Hmm. The actual reverse on 135.23.243.200 yields 135-23-243-200.cpe.pppoe.ca. which sounds like it would be DSL. I wonder if teksavvy added a rule blocking port 25. That's kind of standard practice. You can ask them to remove it. They will get mad if you then start relaying spam. Where are these machines and who can physically access them? My impression is that MTAs kind of want servers to have reverse domain entries that match the name in the MX record. | > Foolishly, both of the required DNS namesevers point to the same | > machine. I'm not sure what you mean here. You have two distinct machines. Each machine is a DNS and mail server.
On 02/11/16 17:35, David Mason via talk wrote:
I have a domain for my family email (and other things) mason-rose.ca <snip> So, first and foremost, I need DNS Servers that can host the DNS records.
Any insight/help appreciated.
I'd consider two options: 1. Do it yourself, which has minimal cost of using your DNS registrar's nameservers, and wherever you run your SMTP server (free if you do it at home), or cheap on the usual linode/digitalocean/vultr hosting options. 2. Use a dedicated service like fastmail. Wash your hands of dealing with email forever. I haven't used the latter, but anyone I know who does is unequivocally positive about their service. Cheers, Jamon
most registrars provide DNS service now. Alternatively https://freedns.afraid.org Dave Cramer On 3 November 2016 at 15:51, Jamon Camisso via talk <talk@gtalug.org> wrote:
On 02/11/16 17:35, David Mason via talk wrote:
I have a domain for my family email (and other things) mason-rose.ca <snip> So, first and foremost, I need DNS Servers that can host the DNS records.
Any insight/help appreciated.
I'd consider two options:
1. Do it yourself, which has minimal cost of using your DNS registrar's nameservers, and wherever you run your SMTP server (free if you do it at home), or cheap on the usual linode/digitalocean/vultr hosting options.
2. Use a dedicated service like fastmail. Wash your hands of dealing with email forever.
I haven't used the latter, but anyone I know who does is unequivocally positive about their service.
Cheers, Jamon --- Talk Mailing List talk@gtalug.org https://gtalug.org/mailman/listinfo/talk
participants (5)
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Alvin Starr -
D. Hugh Redelmeier -
Dave Cramer -
David Mason -
Jamon Camisso