Have you tried Google?
You can likely find whole tutorials answering both your questions.
Ron
On 2020-10-14 3:04 a.m., Jason Long wrote:
Thank you.
Can you tell me how can I setup my Postfix server with A record Or how can I
change the DNS server two support two MX records?
On Tuesday, October 13, 2020, 11:09:22 PM GMT+3:30, IL Ka
<kazakevichi...@gmail.com> wrote:
1- Each domain can have a MX record?
If you want to receive email for this domain then yes, you should have an MX record for
it. Without it "A" record will be used, but it is better to have MX.
2- If a company need multi MX record then it must have multi DNS server too?
You can have multiple MX records with different priorities. Sender's MTA will
try first one first.
Number of DNS servers doesn't affect the number of MX records: in most cases
all public servers must have the same records.
3- Other methods like forwarding need MX record too?
No, if you only want to send email, you are not required to have an MX record.
Some MTAs may decline messages from domains without of MX, but most of them
accept such mails.
But if you have no MX, then you can't get replies and non delivery reports.
There are some books about Postfix: "The book of Postfix", "Postfix: The Definitive
Guide". It may be a good idea to read some of them: they cover how postfix works with DNS and
MX.
On Tue, Oct 13, 2020 at 10:15 PM Jason Long <hack3r...@yahoo.com> wrote:
I'm really thankful for all information and help.
Excuse me, I have some questions and I'm thankful if anyone answer to them by
number:
1- Each domain can have a MX record?
2- If a company need multi MX record then it must have multi DNS server too?
3- Other methods like forwarding need MX record too?
Thank you.
Sent from Yahoo Mail on Android
On Tue, Oct 13, 2020 at 10:12 PM, @lbutlr
<krem...@kreme.com> wrote:
On 13 Oct 2020, at 12:03, Fred Morris <m3...@m3047.net> wrote:
Notwithstanding, any "fully qualified domain name" (FQDN) can have email sent
to it; typically only the FQDN immediately below the zone cut, and also the subject of
SOA and NS records, has MX records.
Pretty sure it is prefect fine to have different MX records for subdomains.
example.com MX 10 mail.example.com.
foo MX 10 mail.sub1.example.com.
Bar MX 10 mail.sub2.example.com.
Universities used to often have different MX servers for different
departments/machines, though now it seems they are using external services for
MX (maybe lucky, I checked five and all were using google or outlook for MX).
--
"Are you pondering what I'm pondering?"
"I think so, Brain, but Tuesday Weld isn't a complete sentence."
--
Ron Wheeler
Artifact Software
438-345-3369
rwhee...@artifact-software.com
