[Dovecot] which architecture to use?

[Matt]

>> I'll first give a try with sendmail cause is already installed and people
>> here are not willing to change that easily! Is that the reason I found
>> documentation in the dovecot wiki for postfix only? I mean how to create
>> virtual users with postfix!
>>
>> I wanted to give anyone the possibility to create an account. No specific
>> reason behind that. Just because its easier and quicker for the user!
>>
>> Thanks
>>
>> George
>>
> Where do I apply so I can start my own spamming business from YOUR servers? ;-P

Perhaps it could be setup to cap the number of emails a given account
could send per day?  Since spamming requires hundreds of thousands of
messages to be sent to make a profit a capped account would be of
little use to them.  Perhaps a Captcha on account creation as well.

Just a thought, sounds like a management nightmare running an open
system like that to me though.

Matt