Hello, Well firstly, I hope my postfix experience is going to better than the pathetic ancient mailing list server that took 3 attempts with gmail in subscriber confirmations...
Anyways... I am looking at replacing our outdated Qmail/ Vpopmail system, I've read the docs and it seems simple enough using MySQL, and it appears using dovecots LDA is preferred method, great, we use noth right now, the question I have is, we have some virtual domains with up to 90K users, now vpopmail cleverly splits them into no more than 100 users or domains per directory, creating countless/sub/dirs/of/domansuser/accounts etc etc (I hope you get my drift) it is blindingly fast, as there is next to no IO impact, however nothing I've read about postfix leeds me to believe, it can split these up, like /var/spool/vmail/domain/part-name/another-part-name/etc/etc/user to keep the IO efficient, as you can imagine the IO issues we will have if you throw 90K into one single directory, we are intending to do this via mysql input, and then moving the mail over (no problems with that,we've done it before with vpopmail to vpopmail)... So hoping someone else here has dealt with this many users under a domain and can shed some light..short of writting more perl scripts to count dirs and then increase and create another sub of a sub and so on, we are tryin g to keep this as mess-free and painless as possible :) Cheers Ed