mx-record

How do I setup an MX record for a sub-domain?

Update - GoDaddy said they don't provide support for custom MX records. I gave up and we just setup an MX record on another domain. I am hitting a road block in assistance with GoDaddy in setting up an MX record correctly and tired of waiting "24 to 48 hours" for propagation. I am going to describe this question in relation to the GoD...

Specify remote port to use for mail via exim4

I've got a stock Debian Etch system, using Exim4. The domains are mostly local but there are some that are remote. To handle the delivery of remote mail I use the Debian configuration file: /etc/exim4/hubbed_hosts This file lists the domain names, and remote MX machines to deliver to. For example: example.org: mx.example.com ...

sendmail and MX records when mail server is not on web host

This is a problem I'm sure is easy to fix, but I've been banging my head on it all day. I'm developing a new web site for a client. The web site resides at (this is an example) website.com. I have a PHP form script to email visitors' requests to [email protected]. When I coded this on a staging server on a different domain, all wo...

Can I use Google Apps for domain Email and still use a "sendmail" server to send emails?

I am using Google Apps for domain to host the email from my domain and I've setup the MX records on my site according to the Google documentation. Can I also use a "sendmail" server to send additional emails from my webserver without there being a conflict with Google APPS? Specific questions: 1) I want to add MX records for my sendmai...

Why have MX records?

I previously asked a question regarding MX records (and appreciate the thoughtful answers I recieved from SO'ers). Now that that problem is resolved, I want to step back and ask why there are MX records in the first place. Specifically: Why does SMTP get special treatment by DNS? We don't have HX records for HTTP or FX records for FTP...

Can I have a different mail server for each subdomain?

Basically, some GoDaddy DNS help text has me scratching my head. Godaddy's DNS service says, "You cannot set up your domain name to use more than one mail provider at a time." But it doesn't talk about more than one subdomain name, with one mail provider per subdomain. I think I need more than one mail server in my organization, where d...

Linux postfix won't send to local domain

Hi there, I think the crux of this issue is that I'm a postfix neophyte, but here goes. I'm using postfix's sendmail on a 1&1 VPS account to post messages from a webserver (through PHP; contact forms, password resets, etc.). It's working fine, except mail cannot be sent to the local domain. That is, if the host is example.com, any mess...

question about UNIX dig output

Using the unix dig command, I can get the following MX record: $ dig +nocmd gmail.com MX +noall +answer gmail.com. 1868 IN MX 20 alt2.gmail-smtp-in.l.google.com. gmail.com. 1868 IN MX 40 alt4.gmail-smtp-in.l.google.com. gmail.com. 1868 IN MX 5 gmail-smtp-in.l.google.com. gmail.com. 1868 IN MX 10 alt1.gmail-smtp-in.l.google.com....

Fast concurrent checking of SOA DNS records for .co.za domains

I want to implement bulk availability checking of .co.za domain names as accurately as possible by checking for the existence of SOA or MX records using C# ASP.NET. I am looking for a solution that can check for the relevant DNS records in a way that properly utilises threading to check at least 10 domains at a time. "Why don't you jus...

Accepting emails from domain with wildcard subdomain

I'm setting up an app to preform mailhooks. You create an account, assign a callback url, and a pattern to match. Then you get a subdomain that you can send email to. Something like accountname.mail.appdomain.com. This is how it might work. Pattern: ^(?P\w+)-reply$ Account: accountname Callback: http://www.someotherapp.com/reply/crea...

Why does php's mail() want to deliver to the second specified MX record?

This is very similar to this problem: http://stackoverflow.com/questions/322659/sendmail-and-mx-records-when-mail-server-is-not-on-web-host I have a php script on an IIS server called example.org. It sends mail() to [email protected], which goes to a spam appliance and on to their Exchange server, but the mail never gets through. ...

Using MX records to validate email addresses

Scenario: I have a contact form on my web app, it gets alot of spam. I am validating the format of email addresses loosely i.e. ^.+@.+\..+$ I am using a spam filtering service (defensio) but the spam scores returned are overlapping with valid messages. At a threshold of 0.4 some spam gets through and some customer's questions are wrong...

Create dns zone records with php

I want to create a site like .co.cc but you.mydomain.net. I can't seem to make it work. I would ideally like to make a CNAME (and an MX record) when a user submits a form with the desired CNAME (I will tell them how to do that) and the sub domain they want. Thanks in advance for any help ...

google apps is setup on my server, how do i get php mail() to use it?

Hi, I've got google apps setup on my server with all the correct MX records etc, now i want to start testing it. I want to use it for all automated emails (registration, lost password etc). I'm testing on a localhost. ...

How to use two email hosts?

A client wants to use Google Apps for employees but they want to offer email accounts to users of their site for which I'm going to use Rackspace email. Rackspace is the cheapest I've found (2/month) that still offers api access even if you only have a few accounts so that's why I'm using them but for employees they want some of the Goog...

How to get mx records for a dns name with System.Net.DNS?

Is there any built in method in the .NET library that will return all of the MX records for a given domain? I see how you get CNAMES, but not MX records. ...

Will emails be dropped if a single MX record is missing?

I'd like to setup email using Google Apps for your Domain but can only enter 5 of the 6 required MX records due to limitations with number of host records I can enter (I'm using Zerigo DNS to host my DNS records): aspmx.l.google.com alt1.aspmx.l.google.com alt2.aspmx.l.google.com aspmx2.googlemail.com aspmx3.googlemail.com aspmx4.g...

SMTP server requirements

Could someone help answer a few questions regarding the networking / DNS requirements for an SMTP server? Assume the server is setup already. Is a MX record required for SMTP? TCP port 25 open to the server? Any other DNS records? ...

DNS_GET_RECORD MX lookup failing

I have a PHP script that is using get_dns_record to retrieve and display specific DNS records for a domain, submitted via a form. It's working really well, except that the section that handles MX records is a little unreliable. Sometimes no MX Records are displayed at all (on domains I know have them). If you refresh 2-3 times, someti...

Am I better off using Google Mail servers to ensure my email isn't marked as spam?

I'm starting an E-Card business. And although mine is completely legitimite, I know they can be frequently flagged as spam. These are for people's birthdays and such, and it is important that they have the best chance of reaching the recipient. Am I better off using Google mx servers for my mail? Or is there a service that could help...