0
votes
0answers
20 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 ...
3
votes
2answers
60 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
votes
1answer
102 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 ...
1
vote
1answer
116 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
votes
1answer
68 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
votes
2answers
208 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
votes
1answer
32 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 ...
1
vote
0answers
93 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 . # ...
0
votes
1answer
65 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 ...
1
vote
2answers
254 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 ...
2
votes
2answers
82 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
votes
1answer
86 views

How to add exception for backup MX to tumgreyspf?

I have an Ubuntu raring server running postfix/dovecot as an email server, with tumgreyspf doing greylisting and SPF checks. My problem is that I also have a backup MX server, that is supposed to ...
0
votes
1answer
697 views

postfix not sending 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 ...
1
vote
1answer
433 views

Postfix deliver mail to correct mail server based on MX Records

We are using Debian and postfix to send mail for our CMS. Our website and email use the same domain but our email is hosted elsewhere. So, sadly when our server tries to send some mail (from some ...
1
vote
1answer
157 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 ...
2
votes
2answers
205 views

MX record for one domain so that other domain can send with the same from

I have two domains: d1.tld and d2.tld. I would like to send emails from d2.tld with the mail from user@d1.tld How should I set my MX record so that receiving mail servers will accept the message? ...
2
votes
2answers
386 views

VPS with Debian Squeeze cannot forwward email - Name service error for name=gmail.com type=MX: Host not found, try again

I have postfix set-up on my Debian VPS, I can: send emails receive emails on my server But forwarding emails from my server to gmail does not work! I configured google's DNS through ...
0
votes
1answer
572 views

Unable to receive email to my own email server from outside

I am creating a mail server for my domain. I bought a domain from GoDaddy.com. Domain is crazywako.info. I have webserver on that machine too. It is running Ubuntu 12.04 with postfix, courier-imap, ...
1
vote
2answers
925 views

Ubuntu Linux - Postfix is rejecting all email coming from non-localhost

I am not sure exactly what is going wrong here, but my server (Postfix?) seems to be rejecting all external emails going to the server mydomain.info. Here is the bounce-back message I am receving, ...
2
votes
1answer
364 views

No MX record found for mail.mydomain.com

I am following this guide on how to set up a mail server, Postfix, and one of the assumptions is that I should have an MX record for mail.mydomain.com. Postfix Guide However, I only have an MX record ...
3
votes
5answers
2k views

How do I setup a secondary incoming mail server?

I currently have a server running Debian 6, with postfix and dovecot handling email. This server hosts email for a number of domains and users, so I use MySQL as my backing store for users and ...
0
votes
1answer
136 views

Mailman for lists with an external mail server for mailboxes

I learned how to setup Mailman with Postfix for a domain like "@lists.domain.com But for regular mailboxes for this domain, I'd like to use the free email hosting solution of the hosting company ...
0
votes
1answer
258 views

Postfix :: redirect spam mail to different mx transport?

Postfix with spamassassin. Acts as an anti-spam gateway for a domain. Scans and then relays. I want to take mail that has been tagged as spam by spamassassin, and send it to a different mail server ...
0
votes
1answer
207 views

getting PHP mail() to work when MX records redirect all mail traffic to another server. (Postfix, sendmail)

Some background info: I have a website (lets say 'example.com') running off a LAMP server (ubuntu 10.04), and all mail traffic is handled by an external email service. My DNS records are set so that ...
1
vote
2answers
701 views

Postfix: how to verify sender's MX record

is it possible to configure Postfix to verify the sender's MX record? For example: if a mail comes in from some.sender@example.com it should look up the MX record(s) for example.com and verify that ...
1
vote
3answers
1k views

Configure postfix to lookup MX records on remote dns for local delivery

Is there any way to configure Postfix in the way that it would check mx record before local delivery. For example - there is hosting platform, client added google.com domain. From now on he is able ...
0
votes
1answer
335 views

postfix sending to last mx record

postfix is sending mail to the last preference mx record (ie:50 instead of 5) Biggest problem is the domain its sending to, the last mx record is dead so the server doesn't respond. I've tried to do ...
0
votes
2answers
395 views

google as domain mail receiver, and linux postfix as another sender?

My domain email can be handled by the google. by setting mx record and stuff to google. but i would like to have my linux server to send email to the world and not treated as spam, is it possible?
0
votes
4answers
1k views

Postfix appears to ignore domain's MX records

On my dedicated server, I have Postfix installed for sending email through the websites. One of my clients hosts their email with a third party so we have MX records set up on the domain. However, ...
2
votes
2answers
766 views

“hostname given in the SMTP greeting MUST have an A record pointing back to the same server.”

I get this error when checking my DNS with an external tool: Spam recognition software and RFC821 4.3 (also RFC2821 4.3.1) state that the hostname given in the SMTP greeting MUST have an A ...
0
votes
1answer
226 views

MX Record warning causing emails to not be sent?

Is it possible the following error could cause emails to not be sent? warning: numeric domain name in resource data of MX record for domain.com: xx.xxx.xxx.xxx Our customer support department says ...
2
votes
2answers
1k views

Postfix relay with Exchange Server

Is it possible (or even logical) to use Postfix as relay MTA with Microsoft Exchange Server 2007, and if so how?