Scaling mailcow to 100K users

oronoa

Hello, a newbie here, wanted to ask if anyone is using mailcow to scale to 100K users or more with some horizontal scaling, I plan to use it for inboxes.com where I need to be able to scale to lots of users so plan to put some load balancer in front of several MC servers and balance on user name / domains in imap.

esackbauer

inboxes.com is for sale at 25000$.
I would do this from business perspective. Find out what users are willing to pay for what service. Define the service (enterprises, smb or private), define t-shirt sizings and interfaces (esp for enterprise and SMB - LDAP, ADFS etc), how to do the billing, then talk to an infrastructure architect for a bill of material and what the whole thing will cost you in maintenance and operations.

oronoa

not sure what the price of the domain has to do with the answer. I’m looking to build a cheap consumer / private email service on such a domain and looking to use mailcow with a simple load balancer setup in front of it? will it scale? is there someone here who can give some tips? or has done something similar ?

D4niel

I don’t think this is a very good idea. Mailcow isn’t meant to be used for scenarios like that. If you want to build systems for 100K users you’d want to build them yourself, so you know them down to the last detail and you can troubleshoot without relying on help from others and waiting for patches.

I don’t even think Servercow has that much users.