My client has 30+ webmail users working in a very limited bandwidth environment (256k/sec). Web mail usage is bringing things down to a crawl.
I am looking for a lightweight SMTP/IMAP e-mail server to replace web mail usage. I used Merak Mail Server (called IceWarp now) 10-15 years ago in a similar situation. It worked really well with low overhead. I understand from reviews that IceWarp has gotten very content rich. There were several negative reviews.
Does anyone know if IceWarp could be a good solution in my situation now?. I want a mail server with a very small bandwidth usage footprint. No Web mail (except locally), chatting, videos etc.,
Are there better mail servers available that are not overkill for this situation?