0
votes
2answers
463 views

Postfix: Helo command rejected: Host not found

i have a Postfix 2.9.6 running on Ubuntu with the following configuration https://gist.github.com/anonymous/400fb4afa05e18c6da2b and i'm suffering the following issue where a valid client tries to ...
-1
votes
2answers
47 views

Postfix Configuration files

Kindly find your help on th below :) I am about to install postfix 2.10.2 on my RHEL server 5.9 I'll do this via source code. I need to reconfigure paths in main.cf, Example: /etc/postfix -> ...
0
votes
0answers
47 views

Passproxy issue in apache - citadel installation

I am running Apache with several virtualhosts. To configure Citadel, I am running WebCit along with Apache (which is recommended option by Citadel). Apache should ideally forward ctdl.example.com ...
0
votes
0answers
74 views

Can I setup DNS on new server and “flip the switch” later?

I would like to know if setting up DNS/BIND on a new server will mess up my old server. Here is my situation: example.com - Main server used for hosting - Domain registrar currently points to ...
1
vote
1answer
74 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 ...
2
votes
2answers
495 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 ...
0
votes
0answers
146 views

Cannot authenticate PAM IMAP dovecot server

I have recently followed this tutorial to set up a mailserver on my Debian Linux box. When I try to authenticate myself with telnet it just kicks me out if I don't specify a domain name and when I do ...
0
votes
2answers
841 views

Block user from sending Email to the outside in SENDMAIL

I have a CentOS server with Sendmail installed and use Fetchmail for mail retrieval. My email server is working perfectly, but I now need to prohibit a user from sending emails to the outside. How ...
2
votes
1answer
353 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 ...
1
vote
1answer
182 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
votes
3answers
307 views

Good open source mailserver for linux [closed]

I'm looking for a good open source Linux mailserver for a small (internet) company. Which is still updated frequently. I'm developing the website with PHP and MySQL if that's important. Anybody any ...
1
vote
1answer
165 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
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. ...
2
votes
2answers
9k 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 ...
0
votes
1answer
179 views

Debian 6 home server [closed]

I need some help to get started. I've been trying and trying to get everything working for my home server. What I want is a guide to install all this: LAMP (and the additions to this like ...
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
4answers
1k 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 ...
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 ...