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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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
35 views

Is it possibe to do an exclusion in an MX record? [closed]

Is it possible to exclude certain addresses or wild card addresses using an MX record?
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1answer
47 views

Ignore MX record and send mail directly to an Office365 address [closed]

I'm a bit of an amateur at this so bear with me, here's the problem: The current email provider for the company only allows a single Office365 exchange account per subscription. They do not allow ...
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1answer
36 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 ...
4
votes
1answer
353 views

Replacing an MX record with a CNAME that doesn't match the hostname

Today we have 5 companies that all use Google for email services example1.com. 3w IN MX 10 mail.Google.com. example2.com. 3w IN MX 10 mail.Google.com. ...
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1answer
38 views

Microsoft Exchange sending to incorrect mail server address

My client is having intermittent problems sending email to a few customers. It has really only happened in the last five days and so far only to six different messages but they all have the same ...
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2answers
57 views

How to block IP addresses from port 25 [closed]

PROBLEM: Users are getting 15-20 SPAM emails per hour, even with SpamAssassin set to its most aggressive settings SOLUTION: SPAM filtering services are available from companies like McAfee (Intel). ...
4
votes
1answer
286 views

What does MX in SPF mean? [duplicate]

I'm setting up an email server, and I'm a bit confused by SPF. Following some examples, I set my SPF record as follows... v=spf1 mx ip4:1.2.3.4 mx:mail.mydomain.com ptr:1.2.3.4 -all I follow what ...
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1answer
25 views

Redirect email for redirected domain [closed]

I have two domain names with a registrar, one points to a server running plesk with a subscription setup to host the website. The second domain name simply redirects to the first using the registrars ...
3
votes
3answers
153 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 ...
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0answers
29 views

Exchange with Postfix MX for technical accounts in same DOMAIN

I have organization configured with Exchange 2007 server with many technical accounts. I would like to migrate technical account to Postfix server with same domain At the moment my structure is: ...
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1answer
70 views

Moving a web server without moving the email server

I need to move a client's website off their old host and onto their new host without changing their email server. I've read this extremely thorough answer on a similar question ...
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1answer
32 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 ...
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2answers
65 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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votes
0answers
20 views

Is it possible to whitelabel MX records? [duplicate]

I have a domain at example.com. I would like to setup email hosting with Zoho email services. Is it possible to setup imap.example.com to forward to imap.zoho.com? I have tried adding a CNAME ...
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votes
1answer
36 views

change Domain MX

I have a windows server and I set my domain name servers to this server. now I want send email from another server, really my web application and mail server aren't on a same server. the mail server ...
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0answers
32 views

Bind caching nameserver MX lookup error for Low TTL Records

We are running Bind (9.8) as Caching Nameserver on a CentOS 6.x based mail server. We get frequent domain not found error for certain domains resulting in mail delivery failure. It was discovered ...
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1answer
42 views

Change of MX records priority seems not to entirely working

I am in the middle of a Cutover Migration from Exchange 2010 to Exchange online. Accidentally for about half a day, i have changed the priority for the Exchange Online MX record to be the lowest ...
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1answer
36 views

How to set up email forward via DNS

We currently have old_domain.com as the primary domain in google mail and new_domain.com as an alias. We want to change new_domain.com to the primary domain. Unfortunately google has a 24 hour lock on ...
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6answers
4k views

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, ...
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0answers
52 views

DNS - Multiple MX records not working for a single domain

I have one domain, let's call it example.com with 2 MX records. The first record points to my on site Exchange 2013 server with a priority of zero, making it the preferred server. The second record ...
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1answer
84 views

Postfix relay and store

So, I am setting up a backup mail server. I got it relaying messages (saving them to queue and then, as soon as primary's up, deliver them to primary). It took following two lines: relay_domains = ...
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votes
1answer
51 views

MX point to different host then web server

I have read many answers on the topic, but still it isn't completely clear, I might need help due to the complexity of the matter. I will explain myself: We have a DOMAIN name for or email which is ...
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1answer
22 views

Moving a domain with Email configured

I have an MX records setup on my domain working with my Exchange 2010 server. Emails are working great. I want to transfer my domain to another provider. So far I have done the following: ...
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0answers
17 views

“Reverse” traffic routing with Google Apps + web host?

I'm a very experienced web designer with only minimal experience with web traffic routing. I'm also a hosting reseller who got bitten by the Great HostGator Crash of 2014, and for one of my hosting ...
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2answers
46 views

Does an MX DNS Record Sub-Domain need to exist as another DNS Record?

I am trying to setup a mail server on my Ubuntu server. In setting up the DNS MX Record for the mail server I am confused. I have added an MX record for mail.domain.com simply because it is the ...
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votes
1answer
46 views

Determining the old MX record [duplicate]

Our sysadmin created our mailserver years ago before he left. We recently decided to use gmail as our mail app and they required us to change the MX record to point to them on amazon route 53 app. I ...
2
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1answer
69 views

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 ...
0
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1answer
103 views

Set MX records on a CNAME domain (heroku app)

I have a heroku app on a subdomain like x.herokuapp.com which is mapped to my domain name via a CNAME record. I want emails to be handled by zohomail so I've tried setting up MX records but these seem ...
0
votes
1answer
119 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 ...
0
votes
1answer
54 views

Website Contact Form stopped working when I moved mailserver [duplicate]

I have a Centos server with ZPanel Installed. This server is used for hosting a website. Previously, I hosted mail on this server using a "Roundcube" mailbox however, I moved to exchange therefore, I ...
0
votes
1answer
34 views

Is it possible to see changed in email headers because of MX record changes? [closed]

I have a need to know when an MX record changed. I know from previous messages that there isn't much online that can help me determine the exact timing of the change, but is there a way in my ...
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2answers
49 views

Bouncing email due to bad initial MX TTL?

Last Friday night we changed mail servers. We moved off Office 365 to another hosted Exchange Solution (Intermedia.net). We use Godaddy for DNS, and after the server migration stuff was ready and ...
3
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0answers
63 views

Big Trouble with (I think) Outlook X500 addressing

I moved a small client from one hosted Exchange server (Microsoft Office 365) to another (Intermedia.net). Some emails from External senders to the users on the new server host are undeliverable, ...
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1answer
666 views

Dig shows external configuration? [closed]

I'm already trying for 2 days to deal with an answer for this problem. I have a virtual server somewhere and installed postfix/dovecot/mysql. It works somehow. I can login with Outlook with the ...
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votes
2answers
83 views

MX vs SRV records [closed]

At first sight, it seems that MX and SRV records serve the same purpose. They both: Point a client to the name of the host the server is on Support prioritizing/fallback I'm aware that MX ...
0
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1answer
76 views

Get a catch-all DNS and set a MX for a special domain

I'm trying to set a catch-all configuration with Bind. I've followed this answer and it works fine : http://serverfault.com/a/397011/179968 Now I'm trying to configure my MX record to configure my ...
1
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1answer
24 views

ec2 setting up MX record not working

I am trying to set up google business emails for my site and I am having trouble creating the MX records to work. I have added all 5 records and they have not registered. This was add a couple of ...
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0answers
122 views

Why does RFC 2181 disallow MX record with a CNAME exchange?

According to RFC 2181 http://tools.ietf.org/html/rfc2181#section-10.3 10.3. MX and NS records The domain name used as the value of a NS resource record, or part of the value of a MX ...
3
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1answer
82 views

What's the proper way to setup a domain name to not accept email?

RFC 5321 sec. 5 states that: SMTP clients must look up for an MX record; if no MX record for domain is present, look up for an A Resource Record (RR), and if such record is present, treat it as an ...
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votes
1answer
33 views

Emails old MX, A and CNAME records [closed]

I need urgent help please. One of my clients had a domain(example.com) which they forgot who they bought it from 3 years ago. i transferred it to my hosting account as addon domain, then they told me ...
0
votes
1answer
79 views

Can send, but not receive email

I am able to send but not receive email on my server - this is similar to an issue I had before, but I've gotten further along and my emails send without issue. I believe the email receiving problem ...
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0answers
66 views

Error when delivering email to Gmail from my server, and MX records for sub-domains

I hope I'm posting in the right forum. I'm having some trouble with email being sent from a forum I run. The email is coming directly from the sub-domain, as in notifications@community.example.com ...
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2answers
95 views

Can email be hosted on a different server than the website? [closed]

While of course the answer in general is a resounding yes, this is my particular issue. A person has a website "example.com" that is hosted unfortunately at hostgator. There email "@example.com" is ...
-1
votes
1answer
131 views

Setup cPanel to use MX records defined at domain registrar level (and not local MX records) [closed]

I use cPanel (without whm on this account) for a number of domains within the same account. For some of these accounts we are only using the related hosting for website hosting, the email is hosted ...
0
votes
2answers
65 views

Mail don't reach server

I have VPS and serve several domains. DNS/MX config should be ok, as for *.com domains mails are both sent and received. Problem is with my country domain - *.hr (Croatia) - mails are sent, but ...
2
votes
1answer
128 views

dns mx record for virtual domain

I am setting up several virtual domains on a single VPS and I'm a little confused about MX records. My desire is for users with email accounts on the various virtually hosted domains to be able to use ...
0
votes
1answer
154 views

Cloudflare secondary name server timeout

I recently switched over to Cloudflare and some people have problem sending mail. I've checked and double checked my DNS settings and they look right. However, I have found that querying the secondary ...
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votes
1answer
66 views

exchange 2007, dual wan draytek 2925n router with 2 ISPs [closed]

Purchased a Vigor Draytek 2925n dual wan router. Domain is hosted by dreamhost.com and the single mx record points to exchange.mydomain.com Internet is provided by my managed office building: they ...
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votes
0answers
84 views

Mail not getting to users on Google when MX records specified in Amazon Route 53

I configured the MX on my Amazon AWS Route53 and I was told that some of the users don't get any emails with this domain. When I send myself an email everything works fine now, and I doubt that ...