Email Server High Availability


 
Thread Tools Search this Thread
Top Forums UNIX for Advanced & Expert Users Email Server High Availability
# 1  
Old 03-09-2016
Email Server High Availability

Hello,

We are planning to setup a Email server with High Availability for email services so that if SMTP/POP/IMAP goes down on one server, the services switch to second server.
We are planning to use a Linux machines from a hosting provider and will do it using DNS with multiple MX records with round robin.

Now i have couple of queries regarding this setup :-
  • Is this possible to have a same domain name to bind with 2 IPs i.e xyz.com point to 1.1.1.1 on one server and xyz.com point to 2.2.2.2 on second server.
  • How can we setup MX records for each server on DNS for email failover.
  • As we have a separate servers for this setup that means data related to email would be reside on separate server (because they have separate HDD), so in case 1st server goes down and it switch to second server, will i skipped my email which was received on 1st server before it goes down as my email client will receive them on certain period of time.

Please let me know if above is a valid query.
Login or Register to Ask a Question

Previous Thread | Next Thread

7 More Discussions You Might Find Interesting

1. Red Hat

Redhat: High Availability

Hi, I want to create gfs storage. But getting error as below: --> Finished Dependency Resolution Error: Package: pacemaker-1.1.12-22.el7_1.2.x86_64 (rhel-ha-for-rhel-7-server-eus-rpms) Requires: sbd You could try using --skip-broken to work around the problem You could try... (1 Reply)
Discussion started by: mzainal
1 Replies

2. Solaris

High availability

hi guys I posted problem last time I didn't find answer to my issue. my problem is as below: I have two servers which work as an actif/standby in high availability system. but when i use command HASTAT -a i have the following message: couldn' find actif node. the servers are sun... (1 Reply)
Discussion started by: zineb06
1 Replies

3. Red Hat

Redhat 5 High Availability Add-on

Hello Experts, I have a question about Redhat HA Add-On, how can i setup an Active/Active Cluster using Redhat 5.7 64Bit, with Round-Robin technique. Each server will run an application and oracle database without RAC. Thanks (0 Replies)
Discussion started by: karmellove
0 Replies

4. AIX

AIX high availability 1-3/69

Hi, Can someone help and give the answer for the following questions: 1. When PowerHA SystemMirror 7.1 is installed on AIX 7.1, what RSCT component does Cluster Aware AIX (CAA) replace? A. Group Services B. Resource Manager C. Topology Services D. Resource Monitoring and Control... (2 Replies)
Discussion started by: walterchang100
2 Replies

5. UNIX for Dummies Questions & Answers

iscsi high availability

Hi, I want to set up a iscsi high availability with sheepdog distributed storage. Here is my system set up. Four nodes with sheepdog distributed storage and i am sharing this storage through iscsi using two nodes as well as using a virtual ip set up using ucarp.Two nodes using same iqn. And... (0 Replies)
Discussion started by: jobycxa
0 Replies

6. UNIX for Advanced & Expert Users

High availability/Load balancing

Hi folks, (Sorry I don't know what its technology is termed exactly. High Availability OR load balancing) What I'm going to explore is as follows:- For example, on Physical Servers; Server-1 - LAMP, a working server Server-2 - LAMP, for redundancy While Server-1 is working all... (3 Replies)
Discussion started by: satimis
3 Replies

7. AIX

AIX and port trunking / high availability

Hi all I was just wondering what modes AIX supports for port trunking ( bonding, etherchannel, link aggregation or whatever you want to call it ) I'm in particular looking for a high availability mode ( other than 802.3ad ) (2 Replies)
Discussion started by: art
2 Replies
Login or Register to Ask a Question
Test::POP3(3pm) 					User Contributed Perl Documentation					   Test::POP3(3pm)

NAME
Test::POP3 - Automate Email Delivery Tests SYNOPSIS
use Test::POP3; my $pop = Test::POP3->new({ host => $host, user => $user, pass => $pass, }); # this will delete all messages from the server ok($count == $pop->wait_for_email_count($count,$timeout),"got $count"); # find and delete a single email message which matches these rules # see Test::Email for more information $pop->ok({ # optional search parameters to => ($is or qr/is like/), from => ($is or qr/is like/), subject => ($is or qr/is like/), body => ($is or qr/is like/), headername => ($is or qr/is like/), }, "got message"); ok($pop->get_email_count() == $count, "$count emails in cache"); # get the Test::Email object my @email = $pop->get_email(); ok($pop->delete_all() == 2, "deleted 2 messages"); # tweak MIME::Parser settings my $parser = $pop->get_parser(); DESCRIPTION
Please note that this is ALPHA CODE. As such, the interface is likely to change. This module can help you to create automated tests of email delivered to a POP3 account. Messages retrieved from the server but not yet matched by a test will be cached until either that message is the first to pass a test, or is returned by "$pop3->get_email()". Messages returned are Test::Email objects. METHODS
"my $pop = Test::POP3->new($href);" The arguments passed in the href are host, user, and pass. "my $count = $pop->wait_for_email_count($count, $timeout_seconds?);" Calling this method will result in all messages being deleted from the server. This will wait up to $timeout seconds for there to be $count unprocessed messages found on the server. After $count or more messages are found, or after $timeout seconds, the current email count will be returned. $timeout_seconds defaults to 30. "my @email = $pop->get_email();" Get all of the email messages currently in local cache. You should call "$pop3->wait_for_email_count($count)" before calling this method if you think that there may be messages on the server yet to be retrieved. Calling this method will cause the local cache to be emptied. Email messages returned will be Test::Email objects. "my $count = $pop->get_email_count($check_server);" This will return the number of email messages in the cache. If $check_server is true, then the server will be checked once before the count is determined. If you would like to wait for messages to arrive on the server, and then be downloaded prior to counting, use "$pop3->wait_for_email_count()". "my $ok = $pop->ok($test_href, $description);" Calling this method will cause the email in the local cache to be tested, according to the contents of $test_href. The first email which passes all tests will be deleted from the local cache. Since this method only checks the local cache, you will want to call "$pop3->wait_for_email_count()" before calling this method. "ok" will produce TAP output, identical to "Test::Simple::ok" and "Test::More::ok". "my $parser = $pop->get_parser();" Test::POP3 uses MIME::Parser to process the messages. (MIME is not yet handled by "Test::Email", it will be soon.) Use this method if you want to manage the parser. EXPORT
None. SEE ALSO
Test::Builder, Test::Simple, Test::More, MIME::Parser AUTHOR
James Tolley, <james@cpan.org> COPYRIGHT AND LICENSE
Copyright (C) 2007 by James Tolley This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.8 or, at your option, any later version of Perl 5 you may have available. perl v5.10.0 2008-10-24 Test::POP3(3pm)