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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DNS mail record concatenates IP address and hostname together

I have the following BIND zone file pointing the webserver to yyy.yyy.yyy.yyy and the nameservers and mail server to xxx.xxx.xxx.xxx: $TTL 300 @ 86400 IN SOA ns1.domain.com. ...
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1answer
20 views

Email reception directing the domain request to EC2 instance

I'm not able to receive any emails on my GoDaddy hosted domain after changing the DNS settings for redirecting the domain request to an AWS EC2 instance. Even though it's a common scenario, I would ...
6
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1answer
2k views

How can you test a backup / secondary MX server?

I'm wanting to set up a secondary MX server using Postfix but I am wondering what is the best way to test this prior to putting into production (by adding its MX entry)? One possible way is to test ...
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0answers
31 views

Using MX records for load balancing on *outgoing* email: bad practice?

I operate a Rails application (a Discourse forum) that needs to send out email. My sysadmin told me I shouldn't use a specific outgoing mailserver, but rather specify my domain and have my app lookup ...
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1answer
25 views

How to redirect MX records to origin domain name?

For a home setup I only have 1 public IPv4. So I have to use it for all my hosts. Luckily I have only one. So in the DNS I use the at sign @ to define the origin, example.com with an A record where I ...
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2answers
30 views

Local mail + external Office 365 Exchange account

I'm not an expert at all so I'll try to explain my problem clearly. I've a domain that I manage with cPanel. I've also an Office 365 solution I suscribed directy on the microsoft website. When I did ...
0
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1answer
27 views

Mail Clients stopped working after MX Change

At first I was using 'example.com' as my MX record and everything worked fine, IMAP, SMTP, sending mails from the mail clients. And then I changed my mx record to 'mail.example.com' and everything ...
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2answers
1k views

Transferring emails messages from one server to another

My domain example.com is provided by 1&1, but I recently moved my website server from 1&1 to another server, controlled with my cPanel. I have also been able to set up a user@example.com ...
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2answers
39 views

How reliable is validating email domain by reverse DNS MX record checking [duplicate]

This question is not about how to protect against spam or validate a particular email user. But how reliable is validating emails domain (does it exists at all) by reverse dns. What are the pitfalls ...
10
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3answers
271 views

MX priority server behaviour

This is a question about MX procotol priority. If I have two server as MX with different priority: MX 10 serverA MX 20 serverB Is this guarantee by the protocol that the MX 10 is the prefered? Can ...
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2answers
30 views

MX record for different email domain

I'd like to create an MX record inside my lan to test a local email server, but with a different domain name. I have a Windows 2012 DC and a domain called company.local, what I'd like to do is to ...
0
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1answer
500 views

Missing or Invalid DMARC Record in server mail

my main problem is that I am not receiving mails to my domain after adding an MX Server to my domain for mailing in Webmin, and After testing a server by mxtoolbox.com tool, I found that there is ...
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1answer
132 views

No MX records?! Zone file for Shopify vs. hosted email

One of my hosting clients has a website: www.vincedevito.ca. Some time ago, he decided to use Shopify as his primary website, but I still host his email. Therefore, I set up a DNS Zone with GoDaddy. ...
0
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1answer
42 views

MX records for wildcard and subdomains

I would like to setup the MX nameservers of a domain domain.com so that every income email goes to mailgun (or other inbound email processor), including all the possible subdomains ...
2
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2answers
10k views

1 domain 2 MX ? Is it possiable to set two MX Record for one domain?

I've seen articles about "different subdomains for different MX records". But I want two records for the same domain, @abc.com for example. Originally, I used Live Mail(MSN) to host my emails, and ...
12
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0answers
541 views

Server 2012R2 DNS server returning SERVFAIL for some AAAA queries

(Rewriting most of this question since a lot of my original tests are irrelevant in light of new information) I'm having issues with Server 2012R2 DNS servers. The biggest side effect of these ...
6
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4answers
4k views

Do I need SPF, and how do I set it up?

I've read that SPF is a way to ensure that spam sent in my name is evidently fake, and I'd like to use that. How do I set up SPF? Or is it already in effect? I have two domains hosted on ...
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0answers
36 views

Email validation fails on HELO / RCPT TO commands to records

I'm migrating a mailing service from a server to another. Before setting up new mailing list I wanted to process it through an email validtor I've setting up on the server. I basically used this tool ...
2
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3answers
78 views

Two technologically different mailserver (Postfix / Exchange) for one domain

I have a couple of users on a Debain Postfix Mailserver. All is fine. Now we need to put some users to a hosted Exchange Server (Office 365). Is it possible to configure the mailservers and DNS MX ...
0
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1answer
27 views

Migrate website away from cPanel but keep email on cPanel? [closed]

I'm new to cPanel/WHM and have relatively basic knowledge of MX records/mail routing, so bear with me if I'm missing something obvious. I've a new customer who has a VPS with cPanel/WHM installed. ...
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2answers
57 views

Why are my MX records not being found and working [closed]

Ok I have been racking my brain for hours and have read every article I can find about MX records. I am just not sure why mine have stopped working. Here are my current MX records: Domain ...
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1answer
27 views

How to know MX record details of a subdomain or destination server to which emails are routed in a case co-existent of two service provider [closed]

In case of two co existent service email provider for one domain. How can i know the mx record of a destination server if I don't know the details of a subdomain. Are there any tools to detect the mx ...
0
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1answer
305 views

Lotus Notes subdomain exchange server

We have a notes server at notesserv01.intra.contoso.com that processes our regular email, and an exchange server at exchserv01.intra.contoso.com for testing purposes. Lotus Notes email addresses are ...
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2answers
30 views

Moving to different hosting provider, what does it mean for MX record and static IP?

Currently, our ISP is also our hosting provider. Our MX record points to mail.example.com. when our website is at example.com pinging mail.example.com gives the static IP we get from our ISP. The ...
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2answers
2k views

domain and sub domain with different MX records

I am trying to segregate email address of my employees according to the geographic location. so i have thought of creating email with location information as abc@in.domain.com or xyz@us.domain.com ...
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2answers
90 views

I recently changed my hosting and now I can only send emails and not receive using GMail [closed]

I have a domain name (emmasteed.co.uk) that I have hosted with UK Reg and I recently moved my hosting to GoDaddy. I have an email that I have used for a few years now: emma@emmasteed.co.uk. When I ...
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1answer
41 views

How do I configure postfix to deliver mail to the first MX record only?

Currently have a postfix server running as a backup mail server for several different domains. So when the primary mail server goes down, email will go to the backup server (second in the order of ...
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1answer
1k views

Emails from Hotmail to our domain always bounce

Now this is a rather odd problem with emails from any hotmail address being bounced by one of our domains. First off, I can guarantee that this is not a spam filter issue as there is defintitely ...
7
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3answers
590 views

MX record point to itself, possible?

Lets say I have the following DNS active for domain example.com (leaving out priority and ttl) example.com A 123.45.67.89 mx.example.com A 123.45.67.89 example.com MX mx.example.com ...
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1answer
37 views

Postfix - Google Apps for Business - MX Records - DNS

We are planning a migration away from Google Apps for Business handling our email services. The services worked well to get us out of the gate, but now we need to consider scale, both volume and ...
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7answers
74k 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 ...
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3answers
103 views

Wildcard CNAME, normal MX record: Risk of unintended mail routing or hijack?

Our domain has the following DNS records: *.example.com IN CNAME foo.org example.com IN A x.x.x.x example.com IN TXT "v=spf1 mx -all" example.com IN ...
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3answers
200 views

Properly configuring DNS for email sending on multi-domain hosting VPS

Background I have a VPS, with one external IP hosting <10 domains (DOMAIN.TLD). Each domain receives and sends email. Each domain has associated DKIM / SPF / MX entries. The PTR record exists and ...
0
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1answer
57 views

Google Apps email messages being flanged as “failed fraud detection” on outlook [duplicate]

mx entries for gmail and spf code for gmail is in place on cpanel however every time I try and send an email from my google apps account it gets picked up as fraud on outlook, and spf=softfail (if ...
0
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1answer
373 views

Postfix + Dovecot + IMAP SSL: imap-login: Aborted login

Am getting familiar with email Mail Server components and configuration. Knowing that there have been quite a few configuration changes to Dovecot 2.x and willing to use SSL encryption, I have come ...
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1answer
3k views

Getting a [550 5.1.1 Recipient not found] (Can't receive email) with CloudFlare

I'm having troubles with my email account. I'm using GoDaddy's Email service and the domains that are not connected to CloudFlare are operating just fine. The problem comes in with the domains that I ...
0
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2answers
30 views

Create multiple email-server names

My email server has two domains and the email hostname for each of them is mail.domain1.com. I'm attempting to remove the 'mail' in mail.domain1.com for domain 1 and set domain 2 to domain2.com. So ...
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2answers
73 views

How to configure Zone File to point a subdomain to another IP

I'm trying to configure a subdomain for a staging machine we have, to no avail. I'm no expert at all in Zone Files and configuration management, so please be patient if something I say sounds weird or ...
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2answers
91 views

how to have domain without www and MX records work together? [closed]

I think i have a common problem but wasn't able to find much resources for answering it. We have a domain and it works when we resolve it as www.domain.com, i have also setup a MX record pointing @ to ...
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votes
1answer
87 views

VPS Email Setup - Can send but can't receive [closed]

Set my first VPS up yesterday and brought a domain name from 123-reg and got the domain working properly. However today I set up an email account via cPanel. The email account can send out emails but ...
6
votes
1answer
13k 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 ...
0
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1answer
89 views

Inserting mx records in forward zone

What is the correct way (and why) to add MX records to a forward zone using bind9? Option A @ IN MX 10 mx1.example.com. @ IN MX 20 mx2.example.com. mx1.example.com. IN A a.b.c.d mx2.example.com. ...
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votes
2answers
76 views

Setting up Google mail server on custom domain

I'd like to use Gmail for Work for my own domain and I have troubles setting it up. So, before that in my DNS config I had an "A" record (mail.example.com), pointing to the email server I used. Now, ...
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1answer
77 views

Change MX record to another server

I have a host-machine with Centos 7 and a guest machine with Centos 6.6. I want my guest to be a mail server on dedicated static ip for all my domains (on the same host-ip and not). P.S. I use ...
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1answer
93 views

PHP/mail is sending emails to wrong mail server

Recently we have switched our email Exchange server from Intermedia to the Office 365. After that change web server (LAMP) is still sending emails to Intermedia. I have check dig MX for our domain and ...
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2answers
660 views

mx server: multiple domains on one ip

I'm just a bit confused about the correct DNS setup for hosting multiple domains on a single server with one ip. For example the mail server (domain/reverse: example.com) should host 3 domains: ...
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0answers
11 views

Proper records for mail and domain [duplicate]

I am having the following question: I have a domain (let's say example.com) and I need to set up the proper records for the e-mail so that to minimize the possibility for a message to go to spam. I am ...
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1answer
52 views

Seperate web/mail server, mailserver won't receive emails [closed]

I have a basic set up: VPS Mailserver Domain Management This is my first experience setting up both a VPS and a separate mail server. My mail server won't receive emails. DNS A ...
0
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2answers
48 views

MX Records Not Getting Resolved By Google Apps

My domain is nexussolutions.com.np. My mail is on Google Apps. My domain host has pointed the MX Records to Google servers. I am getting some mails but not getting many mails. On mxtoolbox.com, the ...
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1answer
168 views

Differing Internal vs External MX records

The setup: The business runs an internal DNS server not accessible to the public internet. The business's domain is registered with a registrar and the authoritative name servers outside the local ...