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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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 ...
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1answer
30 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
32 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 ...
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1answer
32 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 ...
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2answers
57 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 ...
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0answers
19 views

Changes required to SPF record [duplicate]

Our email is delivered to an IMAP account on an external server. We have the option of relaying mail through this server (which we sometimes do) but usually send directly using Microsoft Exchange ...
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1answer
22 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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28 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 . # ...
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58 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 ...
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2answers
65 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 ...
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3answers
40 views

Does a host/domain used solely for MX records pointing elsewhere need an A record?

I've got a domain on dns.he.net that only has an SOA record, NS records, and one MX (pointing to a totally different host). Does my domain need an A record? Currently nslookup fails since there is no ...
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2answers
37 views

Do I need an MX record for my main domain?

Let's say I have several domains. bossguy.com is the domain that hosts my mail (IMAP server) and where I ssh in to manage other domains, for example: domain1.com domain2.com domain3.com It makes ...
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3answers
53 views

How to forward a mail server without MX records?

My company is switching from an old clunky dedicated email server (which we can't maintain anymore) to Google Apps email, and we'd like to start using the Google email now, as the old server regularly ...
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1answer
39 views

TTL on DNS for domains as a security measure [closed]

Ever since I read this article the other day, I've felt a bit uncomfortable about my domains being stolen. And I've tried taking each measure possible. But one I don't understand completely is TTL. ...
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2answers
37 views

Using Gmail apps. New VPS. All mail working except incoming mail to @domain.com emails sent from server

So I just noticed this issue, and it's rather urgent we find a solution, it's literally been ongoing unnoticed several days, as any communication being sent to us from our email forms and offer forms ...
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2answers
73 views

MX lookup failed

This is a part of my dns-zone file: ;; MX Records mx.domain.de. 300 IN MX 1 direct.domain.de. ;; CNAME Records www.domain.de. 300 IN CNAME domain.de. mail.domain.de. 300 IN CNAME ...
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3answers
44 views

Can I use MX Record Configuration to send one account's email to one server and a second account's email to a different server? [closed]

For example, let's say my MX Record(s) specify: 0 server1 mydomainexample.com 1 server2 mydomainexample.com Now let's say: me@mydomainexample.com is an account on server1 and ...
1
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1answer
67 views

Setup backup mail server for Exchange

I am running an Exchange 2013 with about 10 domain names. I currently use DynDNS' backup MX service - which covers a single domain per license. I want to look into creating my own backup MX service ...
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1answer
43 views

How to override an MX value for a particular domain using a transport_maps but have some form of redundancy

I have a postfix mail server and I want to override an MX value for a particular domain. From my understanding this is can be done by the use of transport_maps ...
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1answer
26 views

Emails on other server, dns & mx

I must host emails on other server, my way was: Edit DNS to my server MX Record edit in the zone file (editing with a GUI) If I change for example SOA serial, retry, refresh then are my changes ...
1
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1answer
36 views

One domain but two MX records for two group of accounts

Here is what I want to try: One Domain: mydomain.com; Two MX Records: one is MX1 (Exchange), the other one is MX2 (Google Apps) Two group of accounts: Teacher accounts are in Exchange; Student ...
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1answer
85 views

Reverse DNS to match Sophos name, or mail server name

I think this is a simple question with a simple answer. Our domain, cory.co.uk, reports a DNS mismatch when you do and SMTP test on mxtoolbox.com. I think this is causing issues sending to some ...
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1answer
61 views

DNS Redirect Website to another Server

I have two servers, server 1 and server2. The name serververs of the domain points to server1. 1.I have this configuration regarding Server1 DNS Zones: domain.com. 1200 IN A server2-ip Edit ...
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1answer
39 views

BIND int/ext views, need to return ext MX to int clients

Any DNS pros out there? I have a problem that's stumping me. I have a BIND DNS server that (with views), supports both internal and external DNS. All internal clients look at the internal view for ...
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2answers
142 views

Postfix: Transport Maps via Third-Party Relay Host

I have my website and email hosted with a shared host. Unfortunately their servers are using CPanel, so they are limited in their spam protection options. I also have a VPS that I use for testing ...
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2answers
117 views

Why does MXToolBox not return MX records for my domains hosted with Amazon Route 53?

Ok, this should be straight forward and I'm ashamed I haven't been able to figure this one out for myself, but... I've recently discovered Amazon Route 53 DNS services and I'm now using this for the ...
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1answer
27 views

Access email from check email from backup mail exchanger

I have hosted my website on godaddy. I have mx record (priority 0) to the mail server in the office. I have another mx record (priority 20, belonging to godaddy) as a backup to hold emails when the ...
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2answers
49 views

Assist in diagnosing reverse dns mismatch

We seem to have an occasional issue, whereby mail is bypassing our first three MX records, and going to our 4th MX record. This is purely a backup, and we think that the reason it is skipping the ...
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2answers
65 views

Changing MX records in named zone file

I forgot how all this works. I have a GoDaddy account, using my own DNS and whatnot. I'm having trouble getting my email to work. They said I need to update my MX records. basically, I have the ...
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2answers
41 views

email arriving at wrong exchange server

We are having problems with receiving email from one customer, where any emails they send to subdomain.domain.com is being received by the exchange server for domain.com, resulting in an error ...
1
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1answer
26 views

Sending e-mail to server with external MX

Is it possible to send an e-mail to a server when the MX for the domain is not on this server? I have the following set up: Server A with domain domain.com configured GMail as the Mail Exchanger ...
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1answer
16 views

redirect emails from one domain to another

i have 2 domains. domain.com and domain.org all my emails are at domain.org so i have user1@domain.org user2@domain.org etc... i want that if some have a mistake and he sends email to ...
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33 views

Email hosting on multiple servers

I have a domain with hosting on godaddy while the domain is registered on BigRock. My email Ids are hosted on google apps, which was providing 10 free accounts some time ago. I wish to add few more ...
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1answer
79 views

Hosting email on Gmail, good idea or not? [closed]

Brief Explanation I am currently hosting mine and all of my clients emails on my Linux server. However, in the past, despite having passwords that no human could possibly remember, let alone ...
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2answers
53 views

Handling Bounced E-mail with Google Apps for Business

We're sending e-mail from our ASP.NET application (we'll call it @example.com). We use Google Apps for Business to send and receive e-mail sent to xxxx@example.com. Problem is, Delivery Status ...
0
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1answer
46 views

Can send mail to users on server, but not from remote email

I am setting up sendmail. I have added mx records for my domain, such as mail.domain.org, and domain.org. I did this a few hours ago. I can send an email to a virtual email from the server, but not ...
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0answers
92 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 me@example.org using Google Apps. The MX records for example.org already point to Google's servers and it ...
0
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1answer
30 views

Next Step in Migrating Exchange 2003 to GMail (SPF risks when changing MX record vs disable SMTP)

Our company has been struggling to migrate Exchange to GMail for last 2 years (I will leave this for /r/talesfromtechsupport). We have two domains on two different ccTLDs, and lately Exchange is just ...
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1answer
115 views

Switching hosting, keeping mx records

Nice to meet you all! Here is my dilemma: I have to move a website to another hosting but keep the domain. The client currently has email set up with google apps and the mx records are set up ...
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2answers
29 views

Can I control which DNS record a client application uses?

I'm trying to make our set of servers more fault tolerant. I have a web server, a mail server and a PBX server that uses SIP. I know that for each service, I can have the DNS return multiple A, MX ...
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2answers
54 views

Is it possible to divert mail to my domain to Hotmail? [closed]

The mail server that my web host uses for the domain (say abc.com) is not reliable and I may be loosing important mail. Is it possible to divert my mail to hotmail and use hotmail to send and receive ...
2
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2answers
77 views

Postfix - receive mails in user account

I have successfully installed and configured postfix mail server, and I can now send mail from my user account mail to another email on the net, through Gmail. What I want to achieve: is to send ...
0
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3answers
85 views

Setting DNS for GitHub pages to avoid mail server conflict

I would like to set up a github user page. I have created the repo and now I need to update my DNS records. I have the following DNS entries at the moment: MX Records mail.example.com A Records ...
0
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1answer
62 views

MX Record with Google Apps and Hosting

I am a web dev, but I rarely config DNS/A record/MX records. I have a client who registered a new domain name with Google Apps trial, which means the domain name is registered with GoDaddy and the ...
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votes
2answers
76 views

pointing different records to a CNAME record

I am trying to figure out the following and want to know "why" this is or is not possible. 1) May an MX record “point to” a CNAME record? 2) May a CNAME record “point to” a CNAME record? 3) May an ...
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3answers
68 views

How to change domain's A record without disabling incoming mail traffic for a while?

I have situation where my domain's A record is pointed to certain IP address, which I need to change, but MX record have destination - to my domain name! How to change A record and to avoid mail ...
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1answer
145 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 ...
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1answer
292 views

Using a secondary ISP for Exchange failover

Good morning all, I searched and couldn't find an answer to the following question. We have our Exchange server 2010 in house, which was set up before I came to the company. Last week we got another ...
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2answers
72 views

Can I have two different MX records with one domain

can I have MX records of two different provider for one domain ? Like now I've Google Apps MX records set up on my domain control panel. What If I add ZOHO MX records as well as Google's ? would the ...
0
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2answers
32 views

Required entries in DNS records [closed]

Writing a brief best practices technical document for in house. A Records for hostname / IP mapping (blank).mydomain.com www.mydomain.com *.mydomain.com -can also add subdomain, ftp, cpanel, etc ...