I am a newbie in zimbra and I like to install two zimbra mail server with same domain. So one server shuts off or became unreachable my other server will back me up (Zimbra cluster). So is it possible to do such things with zimbra mail server? and can I do it Zimbra open source edition?
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I am new to DO and I have tried to look for solution online but I didn't find any answer. I am using Ubuntu OS 20.04(LTS)X64 version.
My question is that I have 2 droplets, MailServer droplet where I have installed docker composer and mailcow to run mail mails, and another droplet named WebServer hosting my domains. I have also set up all required DS records under my domain added on WebServer droplet and pointed A record mail.mydomail.com to the IP of mail server droplet. However, whenever I try sending emails they all bounce back unless the ones sending between mydomain users(user1#mydomain.com & user2#mydomain.com). It just says that "The IP you're using to send mail is not authorized.....".
Any support to help me solve this issue will be highly appreciated. An I am wondering if that approach is possible or if there is any documentation on how someone can set up dns records on one server and configure mailserver on another server using digitalocean.
Here is how I set my DNS on mydomain.com to point to MailServer IP
I have a web server running CentOS and a separate mail server running Microsoft Exchange. I have the web server connecting to the mail server via SMTP on port 587 to send emails.
Sometimes the connection to the mail server refuses, but it's rare. Could an intermittent failure be related to port settings? I would have thought it's all or nothing.
For the CentOS web server, what rules should I be looking to configure in the iptables if any? Do I need to add an entry for port 587 on this server? Or do I just need to allow incoming connections on the mail server for 587?
Thanks in advance.
You don't need to set up any iptables rules on your webserver, since outgoing connections are allowed by default. Your occasional drops won't have anything to do with the webserver's firewall, so you'll want to look at tuning your Exchange server, if the error is impactful enough to worry about it.
I have just had to re-image my server and for some reason, when I do a test connection in outlook, it errors on both send/receive with could not connect to server.
I have checked that both postfix and courier-imap are running on the server and have restarted both just to make sure. I am using plesk 12 and have setup users for the email system, so would appreciate some guidance as to how I can troubleshoot this. Many thanks
SOLVED
Reset iptables all good now
I want to send mail b Jboss server when server down , stop working or there is any unexpected crash in server
If jboss is down then it can't send email. Because it is down
So you need to monitor it with a different system.
Nagios is a widely open source monitoring system http://www.nagios.org It has a lot of plugins that can be configured to monitor jboss according to your exact business needs
Hi
I have a Windows Server 2008 R2 VPS that I have just installed the SMTP service on. I can send emails through telnet to smtp (telnet localhost 25) but from my asp.net application, emails reach the outgoing queue and just sit there.
Can anyone point me in the right direction as to what might cause this behaviour?
Thanks