Questions tagged [mx-record]

The MX record is a type of resource record in the Domain Name System that specifies a mail server responsible for accepting email messages on behalf of a recipient's domain.

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Best Practices for preventing you from looking like a spammer [duplicate]

I'd like to feel more confident setting up mail for my clients with regards to false positives. Here's what I know: SPF records are good, but not every spam filter service/software (SFSS) uses them. ...
gravyface's user avatar
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104 votes
6 answers
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Why can't MX records point to an IP address?

I understand you should not point a MX record at an IP address directly, but should instead point it to an A record, which, in turns, points to the IP address of your mail server. But, in principle, ...
dayuloli's user avatar
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46 votes
6 answers
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DNS using CNAMEs breaks MX records?

We are trying to move all our websites we host to CNAMES as we are planning on moving servers in the new year and would like the ability to move some clients to one server and other clients somewhere ...
johnwards's user avatar
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2 votes
5 answers
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Many domains/sites hosted on same server, CNAME alternatives to avoid writing same IP in DNS?

I have many sites (each one with its own domain) all on the same cPanel hosted server (let's say server IP is 1.1.1.1 and server main domain is myserver.com) All these domains use third party DNS (...
Marco Demaio's user avatar
4 votes
1 answer
3k views

MX Backup service [closed]

What suppliers can you recommend, that provide an MX backup service?
Kjensen's user avatar
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22 votes
4 answers
32k views

DNS: Is it valid to have an "MX" record and no "A" record?

Say you own a abcd.com and you only want to use it to send and receive email via [email protected]. You don't want to provide any kind of website. Can you set up the DNS records to include an "MX" record ...
xyz's user avatar
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22 votes
2 answers
104k views

Is it possible to set two MX records for one domain?

I've seen articles about "different subdomains for different MX records". But I want two records for the same domain, @abc.example for example. Originally, I used Live Mail(MSN) to host my emails, ...
9am-5pm com's user avatar
19 votes
4 answers
68k views

How do I set an MX record in Route53 for a GoDaddy domain?

Can't seem to find an answer to this question on AWS' forum, not in the Route53 manual, nor on Stackoverflow/Serverfault in a way that makes sense...and GoDaddy's support sure as heck ain't got an ...
Sean's user avatar
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18 votes
1 answer
34k views

MX Records - go to two servers?

Right now I have a single mail server for IMAP. Let's say I want to introduce Exchange but not all users will be on it. Some users will be on my "legacy" IMAP, others on the "new" Exchange. Is it ...
Unknown Coder's user avatar
10 votes
3 answers
16k views

Can I setup an MX record for a particular user email address?

I would like to configure 2 MX records : - One MX record that identifies an email server to the domain @mycompany.com that will handle all of the emails except one email - Another MX Record that will ...
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9 votes
6 answers
6k views

Under what circumstances (if any) should an MX record point to localhost?

I'm thinking that there's absolutely no reason or justification for this, but before I open my mouth and get some admin in deep kimchi, I thought I should ask. Is there any circumstance in which an ...
HopelessN00b's user avatar
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4 votes
1 answer
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Multiple MX records pointing to multiple servers for a single domain

Is it possible to have multiple MX records pointing to multiple mail servers for a single domain? Must all mail accounts be identical on each of those servers, or is it possible to have email1@...
Collin's user avatar
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3 votes
1 answer
1k views

sendmail: forward wildcard MX to a single email address

I'm trying to set up sendmail to forward all email to **@ **.crm.mycompany.com to [email protected]. Unfortunately my sendmail-fu isn't up to it and I can't find anything useful on Google. My plan ...
Rup's user avatar
  • 275
2 votes
1 answer
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Move primary domain hosting from GoDaddy, but keep email & subdomains there w/ non-GoDaddy registrar

Given a domain registered through DotRegistrar, with GoDaddy as the current host (shared hosting) I need to figure out how to move the hosting for the primary domain to another hosting provider (Force....
Steve Jorgensen's user avatar
1 vote
1 answer
5k views

Transferring domain to new host, but keeping email on old host

I'm helping out a friend manage his website. Said friend has a domain, website.com, which I am transferring from his old host (OLD) to his new host (NEW), but OLD does not provide email services (or, ...
user489520's user avatar
1 vote
1 answer
92 views

Originating (non-critical) emails from a "less-trusted" host

Background We have a webapp running on webapp.example.com that (amongst other things) sends messages by email from time to time. These messages are non-critical: whilst we would like to make a best ...
eggyal's user avatar
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0 votes
1 answer
904 views

How can I disable local mail delivery in Centos? [closed]

I want to disable local mail on my Centos VPS because the I have a web form (on a website which is hosted by the VPS) which is delivering mail to the local mailbox rather than looking at MX records to ...
pgunston's user avatar
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42 votes
8 answers
176k views

Can you lookup a domains past nameserver & mx record history?

If is possible to find out which nameservers a domain was previously pointing too? I need to try and find where a domain was previously hosted so that I can try and gain access to an old hosted email ...
Luke McCallum's user avatar
15 votes
2 answers
9k views

Can you reference a CNAME record in an MX record?

We have several domains all pointing their MX records at mail.ourdomain.com, an internal mail server. We are looking to outsource our email to a new supplier, who would like us to use mail....
NeilS's user avatar
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14 votes
2 answers
23k views

Benefits of using a subdomain for sending email?

Assume I own the domain name, example.org. I am creating a setup where I receive email sent to [email protected] using Google Apps. The MX records for example.org already point to Google's servers and it ...
Michael Brook's user avatar
11 votes
3 answers
6k views

Why do some TLD have an MX record on the zone root? e.g. .ai

I have no idea why the following TLD have a MX record on the root level of the zone. This does not make sense at all. Does this show the technical incompetence of the NIC? Please comment If I'm wrong....
Roland's user avatar
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9 votes
5 answers
3k views

MX records, better setup for load balancing and failover

Take domain example.com, it has two mail servers mail1.example.com and mail2.example.com, both already configured, usually I would go with the following setup: example.com. 1200 IN ...
Krdan's user avatar
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8 votes
1 answer
16k views

is there any way to determine the date a domain DNS record like MX record was published?

We need a way to determine when exactly a DNS record such as MX was published for a domain. Does anyone have a clue?
maggot's user avatar
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8 votes
1 answer
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Wildcard for A and MX records possible?

I'm building an app where each customer can have their own subdomain. For this example, he setup his subdomain to be: whisky I created a wildcard subdomain in my DNS: *.myapp.example A 192.0.2.123 ...
wyred's user avatar
  • 217
5 votes
2 answers
42k views

Why SMTP Reverse DNS Mismatch Reverse DNS does not match SMTP Banner?

I have set rDNS to mail.simplyislam.biz for IP 178.32.48.104 with my hosting server and also in DNS control panel. However, I am still failing this test Result: SMTP Reverse DNS Mismatch Warning - ...
atifdarr's user avatar
5 votes
3 answers
5k views

MX Record for SubDomains

I want to be able to send email to any subdomain I like and not have to configure A records and MX records for each subdomain. Ideally I could send an email to [email protected] and [email protected] ...
Steve Sloka's user avatar
4 votes
3 answers
28k views

Does MX Records have anything to do with outbound email?

I'm really confused about the MX Records and generally with email. I've set up Haraka SMTP server for outbound email delivery because I need to send sign up validation emails. If I don't want to ...
Adam Halasz's user avatar
4 votes
3 answers
13k views

Is an MX-record required on a domain to send emails only?

Imagine the following scenario: There is a online-shop that sends emails with [email protected] There are no MX-records for shop.mydomain.com as no mail to this domain is wanted There is a ...
MatSnow's user avatar
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4 votes
1 answer
3k views

Do I need an SSL certificate for a .DEV TLD on an MX record?

Do I need an SSL certificate for mail exchange (MX) for a .DEV TLD? Couldn't find this online so I'm asking here. I know that it enforces HTTPS and HSTS.
TwentyCharMax's user avatar
4 votes
3 answers
40k views

Postfix: Name service error for name=domain.com type=MX: Host not found, try again

I'm stuck with a Postfix MX related problem. I've just migrated a very old Centos 5 server to v7 so I'm using postfix-2.10.1-7.el7.x86_64. I've upgraded the legacy postfix configuration (maybe the ...
Ismael Olea's user avatar
4 votes
6 answers
3k views

Fixing typos in user-entered email addresses

We see some typo domains in our mail queue from time to time and I have been thinking of using our internal DNS server to correct these people's mistakes. Some examples from the current mail queue: ...
Ladadadada's user avatar
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3 votes
1 answer
2k views

Why postfix does MX lookup for relayhost?

I have in the postfix conf: relayhost = my.internal.relay.example.org All the mails transit through this relay. by default, postfix will try to do a MX lookup on my.internal.relay.example.org Why ...
exeral's user avatar
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3 votes
2 answers
44k views

Two mx records for two different mail servers in the same domain?

I have a domain named example.com. I want to set two mail servers on this domain. The main purpose to set these mail servers is to have two different mail server, as if we have two different domains =>...
meksof's user avatar
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3 votes
3 answers
1k views

DNS, should I be using A instead of CNAME?

I'm doing a big reshuffle of our websites and hosting, moving about 10 domains to a new server. In doing so I had to make some changes to the DNS, pointing all of the domains at the new server. ...
Ben Everard's user avatar
3 votes
4 answers
17k views

Can I use multiple email servers at once?

I was wondering: Can you use multiple email servers at once? In this case, I was going to add all the Google Apps MX records then add the MX records of another email server. My goal here is to only ...
TheLQ's user avatar
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3 votes
1 answer
520 views

A record required for MX record?

Previously our domain, let's call it ourdomain.com, pointed to an IP address (our web host). In addition, we use Office 365 to handle our domain email accounts. DNS records: ourdomain.com A ...
Dave New's user avatar
  • 155
3 votes
3 answers
5k views

MX or A record issues

We have a mail server (Mailenable) which we are using to sell email accounts to our clients. We have one client that could not send email to a specific domain and they receieve this error from the ...
user776720's user avatar
3 votes
1 answer
2k views

Trying to receive emails AND store them into an S3 bucket

I'm trying to store emails i receive into an s3 bucket, i followed this tutorial and multiple others : https://docs.aws.amazon.com/ses/latest/DeveloperGuide/receiving-email-getting-started.html My MX ...
logax's user avatar
  • 139
2 votes
1 answer
211 views

SMTP service detection

I have some basic questions regarding SMTP connections, particularly for Postfix but would appreciate advice for MS Exchange too: When a single relay for a given remote domain becomes unavailable, ...
Andy's user avatar
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2 votes
4 answers
420 views

Does sending e-mail in the name of customers increase the risk of being marked as spammer?

We are developing a SaaS website application that lets users send invoices to their clients. Ideally, these e-mails should appear to be originating from our customers, so the sender e-mail address ...
Adrian Grigore's user avatar
2 votes
2 answers
26k views

Mail server on port 25 only response with 500 command not recognized

There is a mail server that I'm trying to test using telnet. I telnet to the server on the port and it responses with "220 **************************************************************************" ...
user avatar
2 votes
1 answer
5k views

MX records not working on Amazon route 53

I have configured my Amazon route 53 DNS to add the google apps MX records and here is how my route 53 configuration looks like (please ignore the upper red box in the photo) : However, these MX ...
YD8877's user avatar
  • 325
1 vote
3 answers
4k views

Lots of emails I send bounce back

I am running an Ubuntu 10.04 LTS server and Amazon EC2. Just booted the community, installed apache2, php5, sendmail... thats about it. Didn't change anything in the configurations. Last night I send ...
The Shurrican's user avatar
1 vote
3 answers
512 views

Do MTAs always queue mails when they can't connect to dest MX server?

At our (small) office we're deciding whether to have our MX record point to our local Exchange server. I was a bit worried about downtime, so thought that I ought to set up a backup MX server. Then I ...
Andy's user avatar
  • 274
1 vote
3 answers
901 views

How to make sure that in case of our mail server being unreachable (connection down) mail still gets queued and resent once it's back up?

We have had some issues with losing internet connection once in a while. Normally that would mean our mail server is unreachable and incoming email is bouncing. We've set up MX Backup (second MX ...
Zero Cool's user avatar
1 vote
1 answer
306 views

postfix destination full/busy/error try another destination

Does anyone know if it is possible to setup postfix with a destination for a domain. If that destination (which is also running postfix) can't accept the mail because it's disk is full or it is ...
PixelPaul's user avatar
  • 353
0 votes
1 answer
2k views

Configure server to foward unroutable emails to another email server

Is it possible to configure a Linux mail server (we're running exim) to forward unhandled emails to another server? Here's an example of what I'm trying to accomplish: an email get's send to user@...
Harry Muscle's user avatar
0 votes
0 answers
270 views

My website address redirects to '/mail' automatically after mail server installation

I followed this instruction to setup a mail server on my VPS: https://www.linuxbabe.com/mail-server/centos-8-iredmail-email-server After installation completed successfully, when I try my website ...
user3486308's user avatar
0 votes
3 answers
5k views

Point A and MX records to different servers

The more I read the more confused I get, so please advise... I bought a godaddy domain. I have 2 servers, and I want the following... Justhost (Email) Digital Ocean (Web server for app) How can I ...
Ivan's user avatar
  • 109
0 votes
1 answer
333 views

is it possible to add 2 different mx recorId of entry of different registrar in a single domain?

Im having a mail id in google apps for business for one or my domain.since my user accounts has been full (reached 10 users per account).so that i bought yahoo mail service. is it possible to keep ...
Vivek Sathisan's user avatar