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Content Tagged with Administration + mail
How To Whitelist Hosts/IP Addresses In Postfix | HowtoForge - Linux Howtos and Tutorials
If you are administrating a mail server and use blacklists to block spam, you probably know this problem: from time to time your customers complain that they cannot receive emails from certain freemailers.
Setup Mail Client on UNIX-based System
In the last post, a mail server setup was demonstrated. This post will demonstrate the setup of a mail client. Again, the setup of mail client is fairly straightforward. Here is the run.
On the client side, ensure the /var/mail directory is present.
# ls -l /var/mail
If not, create it.
# cd /var
# mkdir mail
Now modify the client's /etc/vfstab file
# vi /etc/vfstab
esoft:/var/mail - /var/mail nfs - yes -
:wq!
Now mount /var/mail
# mount /var/mail
Verify the /var/mail is actually being shared from the mail server
# cd /var/mail
# df -k .
On the client side, ensure the /var/mail directory is present.
# ls -l /var/mail
If not, create it.
# cd /var
# mkdir mail
Now modify the client's /etc/vfstab file
# vi /etc/vfstab
esoft:/var/mail - /var/mail nfs - yes -
:wq!
Now mount /var/mail
# mount /var/mail
Verify the /var/mail is actually being shared from the mail server
# cd /var/mail
# df -k .
Troubleshoot POP3 Mail Server with Telnet
I am finally getting an opportunity to write a post. I have been so busy with upgrades lately and had to put off writing for awhile.
The other day I had a number of users complaining about not being able to fetch mail to their mail client, MS Outlook. As usual, I attempted to duplicate the error. The error message was reporting unable to connect to the mail server. At that point, I decided to telnet the Post Office Protocol or POP3 port, 110, via the command line interface. Sure enough, I had a problem.
Note: The “before and after” command line examples are only for illustration purposes.
# telnet server 110
Trying 192.1xx.xx.xxx...
telnet: Unable to connect to remote host: Connection refused
I started thinking there was a problem with the inetd.conf file. After reviewing the file, I noticed the pop3 service was commented out. The appropriate change was made and inetd was restarted. Problem resolved.
# telnet server 110
Trying 192.1xx.xx.xxx...
Connected to server.
Escape character is '^]'.
+OK connected to pop3 on 3429
By the way, you can check out other popular port services, too.
# telnet server 6667
# telnet server 25
The other day I had a number of users complaining about not being able to fetch mail to their mail client, MS Outlook. As usual, I attempted to duplicate the error. The error message was reporting unable to connect to the mail server. At that point, I decided to telnet the Post Office Protocol or POP3 port, 110, via the command line interface. Sure enough, I had a problem.
Note: The “before and after” command line examples are only for illustration purposes.
# telnet server 110
Trying 192.1xx.xx.xxx...
telnet: Unable to connect to remote host: Connection refused
I started thinking there was a problem with the inetd.conf file. After reviewing the file, I noticed the pop3 service was commented out. The appropriate change was made and inetd was restarted. Problem resolved.
# telnet server 110
Trying 192.1xx.xx.xxx...
Connected to server.
Escape character is '^]'.
+OK connected to pop3 on 3429
By the way, you can check out other popular port services, too.
# telnet server 6667
# telnet server 25
Moving ZCS to Another Server
how to move zimbra between an old and new server
SourceForge.net: Postfix Admin
"Postfix Admin is a Web Based Management tool created for Postfix. It is a PHP based application that handles Postfix Style Virtual Domains and Users that are stored in MySQL or PostgreSQL."
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