incoming/outgoing spool shared with several mailscanners over nfs?

Leif Neland mailscanner-user at NELAND.DK
Thu Apr 28 03:55:33 IST 2005


    [ The following text is in the "iso-8859-1" character set. ]
    [ Your display is set for the "US-ASCII" character set.  ]
    [ Some characters may be displayed incorrectly. ]

Just FYI:

I tried using balance (http://sourceforge.net/projects/balance/)
It's an userland daemon, which listens on one port, and forwards the
requests to several servers on a round robin schedule.
It works ok, but had the disadvantage that all connections to sendmail came
from my own network, and therefore was whitelisted; all acl's on ip was
defeated.
I must look into other types of loadbalancing, beside dns.

Leif


----- Original Message -----
From: "Julian Field" <MailScanner at ECS.SOTON.AC.UK>
To: <MAILSCANNER at JISCMAIL.AC.UK>
Sent: Wednesday, April 27, 2005 11:08 PM
Subject: Re: incoming/outgoing spool shared with several mailscanners over
nfs?


>I would advise the use of multiple independent MailScanner servers, each
> with its own MX record in its DNS. Should load-balance very nicely for
> you.
>
> Sharing mqueue directories is fraught with locking problems and
> inefficient.
>
> The biggest cluster I have heard of is over 100 MailScanner servers.
>
> Leif Neland wrote:
>
>> I've got a mailserver with sendmail and mailscanner, which is getting
>> a bit
>> overloaded.
>>
>> I'm using the setup where one sendmail daemon drops the mail in
>> .../mqueue.in, mailscanner takes the mail from there and drops it in
>> .../mqueue, where another sendmail daemon picks it up and sends it out.
>>
>> Is it possible to share the mqueue.in and mqueue dirs over nfs with other
>> machines?
>> so I can have several mailscanners working on the same diretories without
>> they are trying to process the same files?
>>
>> Or could I make a program which periodically moved mailfiles from one
>> server
>> to another?
>>
>> Leif
>>
>> ------------------------ MailScanner list ------------------------
>> To unsubscribe, email jiscmail at jiscmail.ac.uk with the words:
>> 'leave mailscanner' in the body of the email.
>> Before posting, read the Wiki (http://wiki.mailscanner.info/) and
>> the archives (http://www.jiscmail.ac.uk/lists/mailscanner.html).
>>
>> Support MailScanner development - buy the book off the website!
>>
>
> --
> Julian Field
> www.MailScanner.info
> Buy the MailScanner book at www.MailScanner.info/store
> Professional Support Services at www.MailScanner.biz
> MailScanner thanks transtec Computers for their support
>
> PGP footprint: EE81 D763 3DB0 0BFD E1DC 7222 11F6 5947 1415 B654
>
> ------------------------ MailScanner list ------------------------
> To unsubscribe, email jiscmail at jiscmail.ac.uk with the words:
> 'leave mailscanner' in the body of the email.
> Before posting, read the Wiki (http://wiki.mailscanner.info/) and
> the archives (http://www.jiscmail.ac.uk/lists/mailscanner.html).
>
> Support MailScanner development - buy the book off the website!
>
> --
> Denne mail er kontrolleret for spam og virus af http://www.MailCare.dk
>

------------------------ MailScanner list ------------------------
To unsubscribe, email jiscmail at jiscmail.ac.uk with the words:
'leave mailscanner' in the body of the email.
Before posting, read the Wiki (http://wiki.mailscanner.info/) and
the archives (http://www.jiscmail.ac.uk/lists/mailscanner.html).

Support MailScanner development - buy the book off the website!




More information about the MailScanner mailing list