All Questions
5 questions
0
votes
3
answers
1k
views
How to avoid reverse DNS errors
I am running a mail server (Exim) on a VPS (Ubuntu 22.04 LTS). I am able to send and receive emails without problem, but I do get the following errors from mxtoolbox.com:
Reverse DNS does not contain ...
0
votes
0
answers
1k
views
Do I need a PTR (rDNS [Reverse DNS]) record if using an SMTP mail relay (Mailgun, Mailjet, Send Grid, etc.)?
My cloud hosting provider wants to charge for setting up a PTR record, which I'm not up for.
As I use Mailjet as an SMTP relay server, do I even need to have it setup? Or will all my emails reverse to ...
- 219
2
votes
2
answers
2k
views
Multiple mail servers and reverse DNS
If I have three mail servers MS1, MS2 and MS3 all with different IPs but share the same domain name (exampledomain.com) and I use an SPF record to specify them, how would reverse DNS work on the ...
- 43
-1
votes
3
answers
1k
views
What hostname and rDNS should I choose?
What should I set as hostname and rDNS?
1 server
3 domains (domain1.com, domain2.net, domain3.de)
1 mail server for each domain
My current settings:
/etc/hosts
127.0.0.1 localhost
11.22.33.44 ...
- 179
1
vote
2
answers
300
views
Is it ok that reverse DNS for my mail server resolves to www2.domain.com and not domain.com?
I am trying to make sure my mail server is set up correctly. One of the steps is to ensure that reverse DNS works. We email from [email protected]. When I test rDNS using nslookup i get:
$ nslookup yast....
- 235