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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32 views

SMTP Reverse DNS Mismatch Reverse DNS does not match SMTP Banner

I wonder if you could help me? 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: ...
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1answer
27 views

MX does not work, after setup CNAME [on hold]

I have the following configuration in the DNS server (1-configuration): -------------------------------------------------------------------- Host name | IP address/URL | Record Type | MX ...
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2answers
23 views

Will adding an MX record for email forwarding conflict with an email provider like sendgrid

I'm planning on receiving email/forwarding email using postfix, but sending email using sendgrid. According to this tutorial, I need an MX record pointing to my machine - ...
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1answer
209 views

How can I configure a mail server to support wildcard addresses and catch them with a server script?

Hello I'd like to know if it's possible to configure a mail server to support wildcard addresses like %@example.com or *@example.com and send those incoming emails not in a mailbox (cause they would ...
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2answers
44 views

Wildcard MX record support?

Let's say I want to start a service where customers get their own subdomain on my domain for email addresses only. I have an A record for mydomain.com and a CNAME for www.mydomain.com If I add a ...
1
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1answer
28 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, ...
-1
votes
1answer
25 views

MX Record without a static IP [closed]

There might already be an answer for this, I didn't find one, maybe I'm looking for the wrong thing. The situation: one domain x.org which has a dyndns to my non-static home IP one domain y.org ...
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0answers
16 views

Second email domain records, stop primary domain email from working after DNS propagation

I have an exchange 2010 server with a public IP address. I recently added a second Accepted Domain to this, tested internally and it worked fine. I then went to the Hosts control panel and added the ...
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0answers
20 views

How to set up email DNS settings with a DDNS domain

I am trying to set up an email server on ubuntu. I have followed this tutorial which has worked perfectly but I am now having problems with my DNS. I have a DDNS domain from www.no-ip.com -> ...
0
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3answers
646 views

Using a CNAME to forward traffic from a naked domain [duplicate]

I have a domain, flyh2.com. I use a CNAME to forward www.flyh2.com to flyh2.elasticbeanstalk.com where my web site is hosted. This is the only way Amazon allows custom domain names. A records aren't ...
-4
votes
2answers
224 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. May an MX record “point to” a CNAME record? May a CNAME record “point to” a CNAME record? May an A record ...
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1answer
229 views

Cached MX records from Network Solutions..?

The two emails: new_email@website.com ( Previously Network Solutions, now a Google Apps account ) other_email@other_website.com ( A Network Solutions email account ) I changed my MX Records for ...
4
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1answer
840 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?
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1answer
2k views

How to change mx record in cent os web server without third parties cp

I am using CentOS dedicated server with matrix control panel, which doesn't have facility to change MX record so that I can send my email to google apps mail.
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1answer
197 views

Why did I loose access to the mailboxes on my old web/mail host after changing to a new one but keeping old MX values

So I changed the NS records with registrar to point at the new webhosts DNS servers and edited the SOA record there, deleting the new hosts default MX records and instead putting in the old ones for ...
1
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1answer
1k 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 ...
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1answer
43 views

Postfix blocking mail from backup MX

I have two CentOS 6.6 servers configured with Postfix for sending email. I have everything working great, SPF entries, Domain Keys and OpenDKIM configured and working, but I'm trying to perfect my ...
-1
votes
2answers
68 views

Strange MX Record behaviour / Google Apps

If I check my DNS settings on this site, I find these settings, which are correct in my opinion: Your name servers returned 5 MX records: 1 aspmx.l.google.com. TTL=86400 5 alt1.aspmx.l.google.com. ...
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1answer
18 views

Good idea to add Google MX records with old records to not lose mail?

Currently im looking to transition to google apps for mail service. Right now I'm using my own mail server. Would it be wise to just leave my current MX entries as is and just add in the google MX ...
0
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1answer
231 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 ...
2
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1answer
40 views

SPF records clarification of using A mechanism

What is the difference between using v=spf1 a ~all and v=spf1 ip4:IP_OF_A_RECORD ~all or v=spf1 IP_OF_A_RECORD ~all when configuring SPF records? Which way is correct and more robust and reliable?
3
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6answers
4k views

Hotmail and Live.com rejecting all emails [duplicate]

I have been having problems sending emails from my server to hotmail.com and live.com email addresses. I have read other posts on serverfault but they have not been helpful. Here is the error message. ...
0
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1answer
26 views

find server mail address

A friend has asked if I can help him out on a project he's doing, however it looks like I'm struggling! Hoping I'm posting in the right place, many apologies if it's wrong. Been searching all day to ...
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1answer
35 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 ...
-1
votes
2answers
22 views

Forward non-hosted .de email addresses to hosted .com

I have a domain with associated web and email hosting package ( let me call it mydomain.com ). I also have a second domain ( mydomain.de ), this one doesn't have email hosting. I would like to make ...
2
votes
4answers
7k views

Cannot recieve incoming email on recently transferred domain - all MX records updated and have proper status

Domain Name: digiwhirl.com Edition: Free edition Affected Username/s: N/A Issue Description: Cannot recieve incoming email on recently transferred domain - all MX records updated and have proper ...
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1answer
243 views

Changing hosts resulting in 554 5.7.1 <xxx@domain.tld>: Relay access denied

I have a problem with switching my project from hoster A to hoster B. There are three parties involed: the old hoster, the new hoster and NetworkSolutions as a registrar. I have a .com and and a ...
0
votes
1answer
840 views

Migrating email forwarding entries from DirectAdmin to Google App (Free edition) [closed]

I have a website hosted in a shared hosting account and it contains a DirectAdmin (DA) control panel. From there, I can see some email forwarding entries. I would like to migrate the email server to ...
-3
votes
1answer
43 views

Postfix and multidomain

I'm trying to setup postfix to use multi-domains mail. Right now, I can send mails to user@ns3289160.ip-5-135-180.eu, but sending mails to user@domain2.com isn't working: I receive the following ...
0
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2answers
79 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 ...
0
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4answers
109 views

Testing DNS configuration of domain by using hosts file?

I'm currently migrating a website to another server, and want to test the DNS configuration (more specifically, email MX records) before moving the domain over. I've configured the DNS on the new ...
0
votes
3answers
490 views

MX record changes made in Godaddy account not accepted by Google Apps

I have a linux deluxe hosting account on godaddy.com and I can host multiple websites on that account. Not all the websites are .com and I've bought the domain names from different registrars (just ...
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1answer
61 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
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
97 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 ...
0
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1answer
280 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
votes
1answer
57 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 ...
4
votes
1answer
397 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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2answers
106 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). ...
0
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1answer
150 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 ...
4
votes
1answer
719 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 ...
-1
votes
1answer
207 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
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2answers
126 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 ...
3
votes
1answer
3k views

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.com A 123.123.123.123 ...
0
votes
1answer
281 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 ...
12
votes
3answers
8k 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 ...
11
votes
4answers
964 views

Are separate dns records necessary for web and mail on a single server?

When setting up a web/mail server on a single server or VPS with one IP address almost every guide online follows the same structure for DNS: example.com. IN A 192.0.2.0 ...
4
votes
1answer
313 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 ...
1
vote
2answers
528 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 ...
12
votes
10answers
3k views

Using fake MX records to combat spam

I have a client that is getting heavily spammed.. It's the 15th of the month and POP3 bandwidth is almost 100 GB. There are only 7 e-mail accounts on this domain. I installed SpamAssassin set it to 5 ...