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.
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LEARN ABOUT SUSE
log::dispatch::email
Log::Dispatch::Email(3) User Contributed Perl Documentation Log::Dispatch::Email(3)
NAME
Log::Dispatch::Email - Base class for objects that send log messages via email
SYNOPSIS
package Log::Dispatch::Email::MySender
use Log::Dispatch::Email;
use base qw( Log::Dispatch::Email );
sub send_email
{
my $self = shift;
my %p = @_;
# Send email somehow. Message is in $p{message}
}
DESCRIPTION
This module should be used as a base class to implement Log::Dispatch::* objects that send their log messages via email. Implementing a
subclass simply requires the code shown in the SYNOPSIS with a real implementation of the "send_email()" method.
CONSTRUCTOR
The constructor takes the following parameters in addition to the standard parameters documented in Log::Dispatch::Output:
o subject ($)
The subject of the email messages which are sent. Defaults to "$0: log email"
o to ($ or @)
Either a string or a list reference of strings containing email addresses. Required.
o from ($)
A string containing an email address. This is optional and may not work with all mail sending methods.
o buffered (0 or 1)
This determines whether the object sends one email per message it is given or whether it stores them up and sends them all at once.
The default is to buffer messages.
METHODS
o send_email(%p)
This is the method that must be subclassed. For now the only parameter in the hash is 'message'.
o flush
If the object is buffered, then this method will call the "send_email()" method to send the contents of the buffer and then clear the
buffer.
o DESTROY
On destruction, the object will call "flush()" to send any pending email.
AUTHOR
Dave Rolsky, <autarch@urth.org>
perl v5.12.1 2009-09-22 Log::Dispatch::Email(3)