Re: DNSSEC upgrade

2021-04-27 Thread Tony Finch
Edwardo Garcia wrote: > > Many year ago we set up DNSSEC, our key were generated with sha1 as was > recommended way back all them years. We too are not DNSSEC guru, so some > answer may be simple Well, you are going to do an algorithm rollover, which is one of the more tricky things you can do wi

DNSSEC upgrade

2021-04-27 Thread Edwardo Garcia
Halo all, Many year ago we set up DNSSEC, our key were generated with sha1 as was recommended way back all them years. We too are not DNSSEC guru, so some answer may be simple Now we want to upsecure this to sha256. Also we use ZSK -b 1024 and KSK -b 4096 even modern google from apnic show examp

Re: Per server instance vs central / shared / redundant instances of BIND

2021-04-27 Thread Tony Finch
Grant Taylor via bind-users wrote: > > Do you think that per (mail) server instances of BIND are worth the additional > administrative overhead as compared to more central shared instances? Yes, that's what I did when I was doing mail things. There are a few reasons: reduce load on the shared cen

Re: [External] Re: Per server instance vs central / shared / redundant instances of BIND

2021-04-27 Thread Kevin A. McGrail
For me, I run one locally per data center with forwarders, etc. defined but for a "How to spin up your own mail server", I would likely just keep it to one per mail server. For someone more advanced, DNS is lightweight and anti-spam is very heavy.  So anything you can save on anti-spam process

Re: Per server instance vs central / shared / redundant instances of BIND

2021-04-27 Thread Grant Taylor via bind-users
On 4/27/21 10:24 AM, Kevin A. McGrail wrote: Agreed on the OT and good subject change. :-) For me, I wouldn't bind DNS to the eth0, just another attack surface hence I would use local loopback. I think the main reason to bind to eth0 / LAN is for when there are multiple (mail) servers that

Re: [External] OT: How to Easily Set Up a Full-Featured Linux Mail Server on Ubuntu 18.04.5 LTS with iRedMail 1.4.0

2021-04-27 Thread Kevin A. McGrail
On 4/27/2021 12:14 PM, Grant Taylor via bind-users wrote: and change resolve.conf to 127.0.0.1 for the best RBL performance. How much effective performance difference does the loopback interface (lo) vs the local LAN interface (eth0) make? Similarly, how much effective performance difference

OT: How to Easily Set Up a Full-Featured Linux Mail Server on Ubuntu 18.04.5 LTS with iRedMail 1.4.0

2021-04-27 Thread Grant Taylor via bind-users
BIND-Users on topic content first: #1 bind for a local caching DNS query server I absolutely agree. and change resolve.conf to 127.0.0.1 for the best RBL performance. How much effective performance difference does the loopback interface (lo) vs the local LAN interface (eth0) make? Simil

Re: NXDOMAIN processing

2021-04-27 Thread Grant Taylor via bind-users
On 4/26/21 2:45 PM, bamberg2000 via bind-users wrote: Hi! Hi, BIND 9.11.5, I forward the request ("forward zone" or global "forward first") to another server and I get NXDOMAIN. Is it possible to process NXDOMAIN other than "redirect zone"? I just want to repeat the request to another for

Re[2]: Configuring the location of named .jnl files

2021-04-27 Thread Tony Finch
Anders Löwinger wrote: > Ivan Avery Frey wrote: > > > >We are only using update to provision the acme challenge as described > >by RFC 8555 8.4. Nothing else. > > Acme follows CNAMEs. I've redirected all challenges to my domains to a > separate subdomain, which allows dynamic updates. Works great

Re: [External] [UPDATE 1] How to Easily Set Up a Full-Featured Linux Mail Server on Ubuntu 18.04.5 LTS with iRedMail 1.4.0

2021-04-27 Thread Kevin A. McGrail
Very nice.  This was also posted on Postfix's list but nice to hear firsthand reports as I just read it. Two minor notes to continue the project that you might consider: #1 bind for a local caching DNS query server and change resolve.conf to 127.0.0.1 for the best RBL performance. #2 add the

[UPDATE 1] How to Easily Set Up a Full-Featured Linux Mail Server on Ubuntu 18.04.5 LTS with iRedMail 1.4.0

2021-04-27 Thread Turritopsis Dohrnii Teo En Ming
Subject: [UPDATE 1] How to Easily Set Up a Full-Featured Linux Mail Server on Ubuntu 18.04.5 LTS with iRedMail 1.4.0 Good day from Singapore, I followed linuxbabe.com's Xiao Guoan's guide and successfully setup a full featured Linux mail server on Ubuntu 18.04.5 LTS with IRedMail 1.4.0. Author:

Re: Using RNDC to control remote access to my BIND server

2021-04-27 Thread Anand Buddhdev
Hi Greg, Read the "ddns-confgen" man page. And then read all the material here: https://bind9.readthedocs.io/en/v9_16_13/advanced.html Regards, Anand On 27/04/2021 11:27, Greg Donohoe wrote: > Thank you for the excellent advise, it is a lot clearer to me now. > I am checking the nsupdate & TSI

Re: Using RNDC to control remote access to my BIND server

2021-04-27 Thread Greg Donohoe
Thank you for the excellent advise, it is a lot clearer to me now. I am checking the nsupdate & TSIG man pages for additional knowledge. Outside of these man pages , are there any other references (tutorials/videos) that you would recommend? Particularly around the area of TSIG key generation & man

Re: NXDOMAIN processing

2021-04-27 Thread Matus UHLAR - fantomas
On 26.04.21 20:45, bamberg2000 via bind-users wrote: BIND 9.11.5, I forward the request ("forward zone" or global "forward first") to another server and I get NXDOMAIN. Is it possible to process NXDOMAIN other than "redirect zone"? I just want to repeat the request to another forwarder. It's