Best self-hosted, open source email server?
reddit / selfhosted

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VewixxPlayer · 2023-12-11 22:50

I am looking for an email server that works with an LDAP setup (I want
the mailboxes address and passwords to be the same from LDAP, domain
is already configured in LDAP).

Ideally it would be able to serve CalDAV calendars and CardDAV address
lists associated with the email.

Clients will be mostly Thunderbird on Linux or K-9 on Android, so
whatever works better for these clients.

After some research, the closest I found is Modoboa, but I'm not sure
if I can connect it to a LDAP server, and it doesn't seem to support
CardDAV.

Thanks in advance.

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Impressive-Self9135 · 2023-12-11 23:01

Check out [Stalwart](https://stalw.art)

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adamshand · 2023-12-11 23:54

Stalwart is my pick as well but I don’t think it supports cal/card
dav. :-(

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KD_done · 2023-12-12 00:26

Modoboa supports cardav.. at least it has a sync function for it in
the contacts module.

[https://github.com/modoboa/modoboa-contacts/blob/f6fd455cdc51ce8c86f3
026a0b4d1d44a3fa52cb/modoboa\_contacts/tasks.py#L30](https://github.co
m/modoboa/modoboa-contacts/blob/f6fd455cdc51ce8c86f3026a0b4d1d44a3fa52
cb/modoboa_contacts/tasks.py#L30)

Mailu is a whole "suite" that services what you are looking for.. I
guess..

it all depends on where you would want to store it.. cause,
technically, a mailserver is not related to car and caldav stuff..
perhaps Radicale could help you out, but it all depends on how you
want to marry the user bases.

Stalwart is a perfectly good mailserver (although the whole jmail
thing is.. well, you know, so extra), but works well with cyrus they
say, but postfix dovecot is my prefrence, and I offer cal/cardav
services via nextcloud (and all that has an LDAP backend).

Technically, asking for a mailserver with car/caldav support is asking
is trying to make a car fly.. it's hard, impossible, and blackberry
made it work.. kinda.. but that was kinda the only thing that could
dor car/caldav via SMTP.

Anyways.. iRedmail is also nice, and does what you want.. I guess.

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ddpbsd · 2023-12-12 11:35

Postfix probably.

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arcadianarcadian · 2023-12-12 19:49

Axigen.

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Stewge · 2023-12-16 02:53

Have a look at Mailcow. Very easy to setup Docker containers and quite
powerful. I've been running it for years.

Supports Caldav/carddav support comes from SoGO and LDAP support is
currently in testing/nightly builds according to this:
https://mailcow.email/posts/2023/ldap-announcement/