The tag has no wiki summary.

learn more… | top users | synonyms

11
votes
4answers
859 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 ...
6
votes
3answers
305 views

Having trouble with DNS MX records

I've been reading this: http://www.zytrax.com/books/dns/ch8/mx.html For MX records, and I've setup my nameserver via bind. Here is my zonefile for my website: $TTL 86400 @ IN SOA ns1 root ( ...
5
votes
3answers
532 views

What is the best way to setup a mail server in this day and age? [closed]

I am setting up a fresh brand new mail server and I want to get it whitelisted across all mail companies, aol, yahoo, hotmail, gmail, etc. There are options like mailgun.net which I would consider ...
4
votes
1answer
295 views

Mail Server Storage Backend: Filesystem VS Database

I am trying to compare mail server software to decide which to use at the ISP where I work. I'm confused mainly about which storage backend is better for such use (again, at an ISP, i.e expected large ...
3
votes
4answers
2k views

postfix mail server setup for 8000 users using active directory

i wanna to setup postfix mail server instead of ms exchange server . we have around 8000 users , and we want to use active directory for users . how many servers do we need ? what kind of strategy we ...
3
votes
2answers
168 views

Mail Server suggestion for large inboxes

The employees in the company that I working are using mails alot. Some employees have more than 20GB of mail archive (Checked from Outlook data files). I am using hMailServer for mail server. The ...
3
votes
1answer
569 views

What is the best way to setup redundant pop servers?

I am in charge of setting up our company email infrastructure and have a question on how to setup redundant pop/IMAP servers. I understand that I can setup failover for inbound email using MX records ...
2
votes
2answers
3k views

Forward Mails to Gmail

I have a postfix mailserver running. Mails sent from users to Gmail are showing up in Gmail, so it works in general. Same for all other freemail hosts I know. The problem is that some users have no ...
2
votes
1answer
1k views

Postfix Connection Timed out

I used the tutorial below to setup postfix and dovecot on a Digital Ocean server. But I'm getting "Connection Timed out" when postfix/smtp tries to deliver an email to a remote host like gmail or ...
2
votes
2answers
10k views

How to start dovecot?

I'm building a web server to host multiple websites. I got everything working except the mail server. I'm using linode to host my vps and I've been following their tutorials. FYI, I'm using Ubuntu ...
2
votes
3answers
10k views

how fix telnet at port 25 or 110 or 143 connection failed?

I installed third party application on my Windows 2008 server to turn it into a mail server (MDaemon)... I filled the info during its wizard very carefully without any changes in its options or ...
2
votes
3answers
2k views

Postfix can not send to some mailservers: 'not logged in'

I have setup a Postfix stack (with Dovecot and Spamassassin, ClamAV + Amavis) which is working pretty good, actually. It relays my emails (I am using Thunderbrid as client) to other mailservers. I ...
2
votes
1answer
1k views

Postfix - how to block emails sending out to a particular domain

I am having Postfix installed mailserver and I am using that server for legitimate purpose only. I need to block some outgoing emails for a particular blacklisted domain. Is there anyway to do ...
2
votes
1answer
368 views

How to secure postfix to find out whether the emails are coming really from the sender?

Is it possible to secure postfix in a way, that incoming emails are checked on whether the email comes really from the sender? Is that possible to write php script and chose a sender, like the mail ...
2
votes
1answer
2k views

Is it possible to receive inbound emails using Mandrill?

I am using Mandrill mail server for sending emails to users and I have my own domain added to Mandrill to send out mails. Suppose I have configured Mandrill to use info@mydomain.com to send out emails ...
2
votes
2answers
637 views

Cannot receive greeting message from remote mail server

I am trying to setup a mail server (postfix & dovecot) on Ubuntu. However, I cannot send/receive email, and get a similar error like posted in Postfix: lost connection with *somehost* while ...
2
votes
1answer
156 views

Hide Email address?

I recently got a request from my boss, essentially he needs this: Clients will send email to a general@example.com, a. Dispatch emails from clients to agents according to some rule, like: Forward ...
2
votes
2answers
712 views

Rackspace: installing mail and web server applications on the same server

I've set up a web server on a Rackspace cloud server, and that is running fine and doing everything I need. Now I am trying to figure out how to add the ability to send and receive e-mail. I've ...
2
votes
2answers
96 views

how to Dedupe email messages in exim mail server (Linux)

If a User is listed in multiple aliases or multiple mailing list or groups a message is sent to more than one of the aliases, mailing list or group the end User will receive multiple copies. How to ...
2
votes
3answers
3k views

Do I have to have an ssl certificate for my mail server?

Question is really simple. If I want to setup a mail server, do i have to have it or is it just a security issue? What kind of problems can it cause?
2
votes
1answer
143 views

Is Sender Policy Framework (SPF) effective in preventing Phishing emails?

As defined in RFC4408, Sender Policy Framework only checks the envelope sender (aka MAIL FROM). The From: header is not being tested. As it is the value of the From: header which is usually displayed ...
1
vote
1answer
746 views

Hosting multiple email domains on single server

Is it practically possible to host multiple email domains on a single machine with single IP address? Considering that spam filters do RDNS and in that case one IP address may host only one domain to ...
1
vote
1answer
176 views

What's a good way of handing pop3 mail to an imap server?

I've got several POP3 accounts that need to be collected and handed to an IMAP server. This must be safe, so anything racey or non-atomic won't work. How should I do this?
1
vote
1answer
709 views

When pointing to new DNS servers is there any chance of E-mails being lost even if the old E-mail hosting service is still up?

I am changing webhosts and will be using the new hosts mail servers instead of the old ones. I have created all the correctly named mailboxes on the new service but have also not yet cut ties with ...
1
vote
3answers
379 views

Can a webmail client interact directly with the SMTP server? (without IMAP)

I'm trying to understand how all the components of a mail server fit together. I understand that the SMTP server is necessary to send emails. In terms of accessing email, I'll setup a webmail ...
1
vote
1answer
359 views

QMAIL - Do not handle emails for my domain

How can I stop q-mail from handling my domain specific emails? For example, I have a blog installed on my server and it uses PHP to make use of the mail() function to send out emails. ...
1
vote
5answers
239 views

tool to externally monitor mail server availability and alarm on loss of conectivity?

Are there any techniques or services that can help monitor our mail gateway is dead? we use nagios right now to manage other servers but when the mail server itself is down we dont get a notification. ...
1
vote
2answers
114 views

Mailserver vs. Mailgateway

What is the difference between a MailServer and a MailGateway?
1
vote
4answers
285 views

choosing linux OS and webserver software

I want to build a new webserver (bear with me, I'm new to this): My demands are (prioritized list): 1. Security 2. Ease of use (Administration, configuration). 3. Speed General features needed: - ...
1
vote
2answers
66 views

Postfix stopped sending to the internet

I am quite new in server managing, and I have a vps with Centos 6.5 / Plesk 11.5. My problem is that after having two mail accounts hacked, and used to send spam mail, I now can't send to most parts ...
1
vote
1answer
222 views

Procmail variable to command

Maybe stupid question, but I can't find it anywhere. I have a variable in procmail (eg $SUBJECT) and I need to push it to some shell command. Something like: # in /etc/procmailrc ...
1
vote
2answers
2k views

Changing qmail's outgoing IP

QMail uses the server's default IP as its outgoing IP. How do I change the IP to something else? I tried the instructions in the following links but they don't work in my case. ...
1
vote
5answers
200 views

Where can I find a complete tutorial on setting up a postfix mail server

I am trying to find a complete / solid guide on setting up a Postfix server on Ubuntu 11.04 Server. I want to install using MySQL so I need one that talks about setting up the DB. Everything I have ...
1
vote
4answers
640 views

Very simple incomng mail server

All I really need is a catch-all address, which receives the email and pipes it to a script on the server (will use a PHP script). Whats the simplest mail server which has small footprint and serves ...
1
vote
3answers
242 views

How to prevent Linux server from spamming?

I installed mail scanner for spam protection, but is there any script for Linux to notify me or email me that some one spaming on my server ?
1
vote
2answers
242 views

postfix sort mails using a cronjob

My mailserver consists of dovecot and postfix. I am receiving alot of mails from different mailing lists. These mails should directly go into my inbox when they come in, because it is easier to ...
1
vote
2answers
6k views

550 Requested action not taken: mailbox unavailable or not local

Have set up a small website for a client however contact form submissions are not getting through to their email address. They have website hosted on one server and email on another although website ...
1
vote
2answers
238 views

Multiple Servers + One MailServer

Hy, I got several Linux-Servers (running Debian) where different services run: Database-Servers, Webservers, Applicationsservers, Tools and so on. All Servers are connected to the same internal ...
1
vote
1answer
89 views

Postfix with virtual users won't send mail to domainname on server

A debian mailserver with postfix and courier is able to receive and send mail for domains listed in virtual_mailbox_domains without a problem. But if there is a mailadress used that is used during the ...
1
vote
2answers
424 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 ...
1
vote
1answer
116 views

Connection Time out on Email forwarding

I have a situation when forwarding from postfix mail server to yahoo,gmail,aol,icloud and many others forwarded email delivery to major ESP stopped at once though it works for my company email and the ...
1
vote
1answer
104 views

Can I use MX records to deliver some addresses to Google Apps and some to my server?

I have whm installed on my VPS, which my domain MX records are pointing to: 0:mail.mydomain.com and whm/cpanel has mail forwarding rules which pipes certain @mydomain email addresses into my CRM ...
1
vote
1answer
167 views

limit size of error reply in qmail

We are using qmail as a mail server. If a user sends an email that cannnot be delivered he get's a message back from qmail with some details about this error. Hi. This is the qmail-send program at ...
1
vote
1answer
681 views

Issue with sending mails from thunderbird via postfix

I run into problem where I cannot send mail via SMTP by using for example Thunderbird - but locally from machine, mail sending works perfectly fine. Mail server got configured also dovecot - that is ...
1
vote
2answers
2k views

Dovecot install: what does this error mean?

I have postfix and dovecot installed on CentOS 6 (linode) along with MySQL. The table and user is already set up, postfix installed fine, but dovecot gives me this error in the mail log: Warning: ...
1
vote
2answers
2k views

A good Mail Server tutorial? [closed]

I recently got a VPS and is in the process of making it into a web server. I got everything setup but mail. I've been working on this mail server for a bit, but I haven't had much time to work on it. ...
1
vote
1answer
289 views

Ubuntu 10.10: Email Server

Let's assume I know nothing about mailservers or Linux/Ubuntu. I want to set up a mail server that will easily allow me to add emails with different domains and connect with various email clients via ...
1
vote
1answer
36 views

Smarthost with two email server backend [closed]

I have a smarthost (sendmail on linux installation) which is serving my lan email server, and it is - obviously - in DMZ. I'm planning to change my lan server in order to migrate to exchange. I would ...
1
vote
2answers
2k views

Mailserver: Debian, Postfix, Dovecot

I'm trying to set up a Dovecot and Postfix mailserver. My wishes for the server: IMAPS SMTP (secure if is it an option?) Both IMAPS and SMTP must require an user from MySQL, same table. Mails are ...
1
vote
5answers
2k views

Force Dovecot not to log connect/disconnect messages

My /var/log/mail.log gets constantly flooded with Dovecot connect/disconnect messages like this: Mar 29 18:15:48 summit dovecot: IMAP(foo@bar.baz): Disconnected: Logged out bytes=63/2126 ...