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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Mailgun Is Not Detecting My New MX Records

When I issue a DiG command to verify my MX records, I get the following output: $ dig example.com MX ; <<>> DiG 9.9.5-3-Ubuntu <<>> example.com MX ;; global options: +cmd ;; ...
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1answer
39 views

The correct PTR record in DNS

I'm confused with my DNS records. I own a domain (e.g. example.com).I've set A record for my SMTP server (e.g. smtp.example.com) for outgoing emails. The email address is (e.g. ...
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0answers
28 views

Exchange 2007 not delivering to primary MX of one domain

I'm trying to send email to a domain that has two mx records. The higher priority record is IPv4 and the 2nd is IPv6. Exchange gives me a delivery is delayed message in my inbox after I've tried to ...
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0answers
20 views

Setting up standard DNS/MX records for Exchange

I'm trying to setup a mail server (Exchange), and we don't currently have a static IP, just a dynamic one. So from what I've read, running a mail server from dynamic IP causes problems as some mail ...
0
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1answer
49 views

DNS - How to make existing domain to no longer resolve & maintain functional MX record [duplicate]

I would like an existing domain to no longer resolve (terrible historical SEO? work, content will move to another domain) And at the same time only maintain that domains historical email address for ...
0
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2answers
245 views

Emails not being delivered to server from certain mail servers: “domain has no valid mail exchangers”

I'm having trouble with a server that I administer. I've been told that a number of emails aren't coming through. These are consistently from certain people. Here's the bounce error that they ...
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1answer
772 views

Postfix doesn't send domain mail to mx

I'm trying to get postfix to forward email to my domain which is hosted by gmail. As I don't have any users on my server nor do I want to. Here's how I have things set up. Let's say you and I have a ...
0
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1answer
79 views

Why is mail going to an old mailserver after I changed the MX records?

I have a strange problem. I had to transfer mails from one server to another. I set up a server with QMail and Plesk, and everything is working. I created mail accounts similar to the accounts on the ...
0
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2answers
34 views

Receiving mail in a python process on an aws instance

I'm using a Python smptd server on an AWS instance. It's listening on localhost, port 25. I can send mail to it through a Python smtp client on the same instance. I have an elastic IP associated with ...
0
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1answer
50 views

what're the proper DNS record settings for google apps so that my site hosted on another company can send email that won't consider spam [closed]

I'm using Google apps email and I have a website that's hosted on shared hosting company. How should I configure the DNS records so that incoming mail will get to Google but at the same time email ...
0
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1answer
29 views

“relay access denied” after changing domain A record

I'm experiencing issues with email, specificially "Relay Access Denied" errors after changing my A record for my apps domain name. It was previously setup like: Host a manages dns (mydomain.com in ...
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1answer
54 views

How does an MX relay work, as in, how is my SMTP server supposed to use it? [closed]

I'm trying to set up a Postfix server (any other software would be ok for me as well). I don't have a static IP, and that can apparently be quite a problem for e-mail purposes: I managed to "send" ...
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1answer
2k views

hMailServer Email + MX Records Configuration

Trying to make DNS changes to enable email to be sent using hMailServer. My mail server is on a separate machine with a separate IP Address. I have already added MyDomain.com and an email account I ...
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0answers
37 views

Create an MX record alias?

I have a domain example "copperwidgetmakers.com" for this domain, I get mail at washers@copperwidgetmakers.com. A few months ago we got annoyed at typing this in twitter and other sites and we ...
18
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6answers
28k 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 ...
2
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1answer
29 views

Relay Access Denied - Combined with external mail service

I have a client website which is spitting out this error message after you complete any of the forms: Mistake in recipient address! 554 5.7.1 : Relay access denied Mistake in sending data! 221 ...
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0answers
66 views

How to force postfix follow (dns) mx priority even for local domains on Linux Ubuntu Server with Plesk

Use Case Scenario I have a Linux (Ubuntu 12.04) with Plesk (11.5) hosting server where some clients use the server's mail service only as a failover. They set up an external mail server with higher ...
0
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1answer
37 views

smtpdiag tool lists wrong mail servers

I have a weird issue on a server. When i run the smtpdiag tool, it lists the old mail server settings (with mx servers being website.com & mx01.1and1.com). here're the results Checking MX servers ...
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1answer
51 views

A-Record to point to hosting vs. changing DNS while keeping the mail externally

I currently am dealing with a client whose e-mail is hosted on Google. We are just in the process of taking over their domain, but their current hosting company suggests a different set up than I do ...
3
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2answers
90 views

Backup MX server used to queue mail

In short: I need to setup backup MX server, which will queue messages it receives for later delivery through original MX, AND it must only accept messages for mailboxes which will be listed in ...
0
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1answer
52 views

Finding valid email service providers in a large list of domains

I have a list of approximately 13K free email/webmail providers from circa 2000. Obviously the vast majority of these services have gone out of business, and the domains have either lapsed, or been ...
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2answers
45 views

Strange MX Record behaviour / Google Apps

If I check my DNS settings on this site (http://www.dnsinspect.com), I find these settings, which are correct in my opinion: Your name servers returned 5 MX records: 1 aspmx.l.google.com. TTL=86400 ...
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2answers
42 views

SPF with a Mail Gateway: do I need to put all my mail servers?

I always put all my Mail Servers in SPF declarations, but I'm not sure if this is the correct way to implement SPF. All my mail got routed through a Mail Gateway. Everything goes first to this server ...
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3answers
1k views

How do mx records work when there are multiple ones at the same priority?

I've setup my domain to work with Google apps so I've added the 5 mx records it needs to work. However, I added another mx record to work with another 3rd party service. priority - mail server ...
5
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1answer
331 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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1answer
108 views

Office 365 shuns MX records

I currently have a domain on Office 365 and I am adding a second one. However, the moment I added the new domain and verified ownership by adding the TXT record, my users on the first domain can no ...
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2answers
23 views

Sending mail from sub-domain on different server from domain getting flagged as spam

Our client owns a server with a domain: website.com We have a server that our client points videos.website.com to. Emails sent from videos.website.com are getting flagged as spam because website.com ...
0
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1answer
367 views

How to find out mail enable dns settings?

I have just installed mail enable on my server. I need help understanding what is the IP of my mail server and where to point my MX records? Say if my server IP is 81.222.222.222 is this where I ...
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1answer
88 views

can't delete Resource Records through CMD in Windows Sever 2008

Final Update Problem erased in the least acceptable way: After re-installing the DNS-Server lead to even more problems, I re-installed the whole Operating System and - up to now - everything works ...
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1answer
700 views

Sendmail issue with IPv6

I have an email server configured with multiple-instance of sendmail running each on different IPv4 and IPv6 addresses. Everything is running smooth until a point where for some domains/emails ...
0
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1answer
63 views

MX records to ensure failure of email delivery

I'm managing a set of domain names that used to have MX records pointing to a hosted mail service. When the hosted email service was deactivated, emails sent to the (now invalid) addresses resulted in ...
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1answer
53 views

Dns filezone setup with mx and spf

I am trying to create a mail server. I bought the domain mastermails.info on godaddy.com. I am struggling with the setup of DNS. Whenever I change something in the MX record to make my server ...
0
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0answers
23 views

global autoresponder google apps

We just migrate our main domain to a new one. (@olddomain.com -> @newdomain.com) Now we want that people who send emails to any account in @olddomain.com, receive automatically a message like "the ...
4
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3answers
961 views

MX Record Priorities

What does do each of the values 0, 1, 5, 5, 10, 10 mean? Google says you can do that or use 1st 1st 3rd 3rd <-- how are these different or the same? Will 0,1,2,2,3,3 act the same as 0, 1, 5, 5, ...
3
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1answer
221 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 ...
0
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1answer
176 views

What should be my MX records for postfix configuration like for mail forwarding?

I have a Digital Ocean VPS, at which I installed postfix. I want to do mail forwarding. When I installed postfix I picked No configuration option. Later I set up the following: I created main.cf at ...
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1answer
54 views

Setup Mx record for specific host [closed]

I am trying to set up MX record of my domain to point to the google server. According to the google documents I should enter the following values for MX record of my domain ...
2
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1answer
268 views

Setting myhostname and Mydomain in postfix for mutiple domains

I have 5 domain names currently pointing to my email server, which is running CentOS 6.5 with Postfix, Dovecot installed. Although I am now only able to receive emails but not send (for reasons I ...
0
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1answer
419 views

Sender address rejected (mx record not found)

I am using both Exim and Office 365 to send email - the server sends automated mails from an application using Exim and Office 365 handles day to day user and incoming email etc. I am getting some ...
0
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1answer
61 views

Setting MX entries for Failover [closed]

I have a GoDaddy domain as "example.com". I wanted to have my own DNS server for the sub domain secure.example.com. So I added a "A" record "NS" pointing to my IP and a NS record "Secure" pointed to ...
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1answer
40 views

Removing non-0 priority MX records

I have MX records set up as such: 0: domain.com (runs of the webhost, really bad) 1: GOOGLE ... google I somehow accidentally added the Google Apps mx servers, btu didn't change the priority 0 ...
2
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4answers
9k 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 ...
0
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1answer
98 views

Mail Server with different IP than Web Server [closed]

I recently had a problem. Somebody hacked a Wordpress Site of one of my customers and sent about 70.000 Spam Emails. So my Server IP got blacklisted on some Providers. I'm looking now for a solution ...
0
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2answers
344 views

Mailserver and MX records in Cloudflare

I built my own mail server using postfix/dovecot in CentOS 6, this is my postconf -n results: alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases command_directory = /usr/sbin ...
0
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2answers
605 views

custom MAIL server -> Proxy Server -> Gmail Server

So I have some custom VPS which route emails via MX record in DNS. And I need to setup gmail interface via Google Apps - this step and previous are clear. But how can I insert some middle layer, to ...
0
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1answer
34 views

How to DNS emails to vhosted domain to separate server than website

I apologize if this is a duplicate, but I'm not sure of the correct phrases to search to ensure this hasn't been solved yet. I have 2 servers, with PTR records of domain.com and mail.domain.com. The ...
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120 views

Postfix transport relay based on result of MX lookup

You can tell postfix to relay all mails for *@gmail.com via your account on smtp.google.com using transport maps: # /etc/postfix/transport gmail.com smtp:[smtp.gmail.com]:587 . # ...
6
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2answers
4k views

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 ...
0
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1answer
134 views

Using alternate server for specific subdomain - DNS settings

I'm trying to set up DNS records for a domain name, such that mail.domain.com uses a server that is different from any other request to *.domain.com. As I've been going about trying to figure out how ...
2
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2answers
79 views

Will MX records with a longer TTL help mitigate effects of DoS attack?

We have our email hosted at Google Apps, and have our DNS servers for the domain setup at Namecheap. About a month ago our website went down (not a big deal, since it's most just a contact info ...