From owner-freebsd-isp  Wed Mar  3 22:38:40 1999
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To: "Haifeng Guo" <haifeng@ms.lawton.com.cn>, freebsd-isp@FreeBSD.ORG
Subject: Re: Mail server setup 
In-reply-to: Your message of "Thu, 04 Mar 1999 13:51:40 +0800."
             <01be6603$131daec0$0401a8c0@guo.lawton.com.cn> 
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Date: Thu, 04 Mar 1999 19:38:00 +1300
From: Andrew McNaughton <andrew@squiz.co.nz>
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> Hi guy:
> 
> I have a problem , The e-mail user of our server have over 100000 ,so I want
> to devide the user into several server and the e-mail addrees keep same (for
> example: all user have the xxxx@lawton.com.cn ) any suggestion thank a lots

Firstly, I should say that I don't have experience of mail servers handling 
that volume.

sendmail's virtusertable stuff will split mail out however you tell it to.  
I'm not sure whether you can set up multiple SMTP servers with the same 
priority in the MX records.  Otherwise you can multiplex your domain name out 
to multiple IPs.

I don't imagine you really want to have to organise 100,000 users into 
changing their pop server settings.  You can probably multiplex your domain 
name out to multiple machines all connecting via NFS (probably a dedicated 
mini-network between the servers), and have all of your mail stored on one 
file system.

There was a fairly detailed discussion of a setup like this on freebsd-isp 
last year.  It would be well worth finding that discussion in the archives.

Andrew McNaughton





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