How to deal with several domains

Hello!

I am newbie as a sysadmin and postmaster, although FreeBSD with Sendmail 
and Cyrus with Nextcloud WebUI (based on Horde libraries) installed and 
set successfully, thank you.

Own e-mail @on.lt with aliases @online.lt on MX host sala.online.lt 
works smoothly now, but I can not set @patirtis.org properly without PAM 
accounts to access the localhost as its users. Is that feature still not 
implemented yet?

I have set 'virtdomains: userid' and 'defaultdomain: on.lt' in 
imapd.conf, appended patirtis.org to mailertable and local-host-names 
for Sendmail, eventually established two mailboxes: my vladas and other 
karalius for patirtis.org using Cyrus SASL and then Cyrus Admin:

> # saslpasswd2 -u patirtis.org vladas
> # saslpasswd2 -u patirtis.org karalius
> # sasldblistusers2
> cyrus!sala.online.lt: userPassword
> vladas!sala.online.lt: userPassword
> vladas!on.lt: userPassword
> vladas!patirtis.org: userPassword
> karalius!patirtis.org: userPassword

(@ replaced with ! here, sorry)

> # cyradm -u vladas patirtis.org
> Password:
> Login failed...

Fortunately, I found an undocumented workaround:

> # cyradm -u vladas!patirtis.org patirtis.org
> lm
> INBOX (\Subscribed \HasNoChildren)
> lam inbox
> vladas!patirtis.org lrswipkxtecdan cyrus lrxtecd
> lqr inbox
> INBOX STORAGE 0/1048576 (0%)
> quit

Then I tried to access 'karalius' by Thunderbird — successfully, it even 
created a few of typical mail folders and sent a test message From: 
<karalius ! patirtis.org>.

> # cyradm -u cyrus localhost
> lm
> user/karalius/[email protected] (\HasNoChildren)
> user/karalius/[email protected] (\HasNoChildren)
> user/karalius/[email protected] (\HasNoChildren)
> user/karalius!patirtis.org (\HasNoChildren)
> user/vladas (\HasChildren)
> user/vladas/Draft (\HasNoChildren)
> user/vladas/Junk (\HasNoChildren)
> user/vladas/Sent (\HasNoChildren)
> user/vladas/Trash (\HasNoChildren)
> user/vladas!patirtis.org (\HasNoChildren)
(! means @, too)

Looks a bit weird, although the real paths are quite logical:
/var/spool/cyrus/domain/patirtis.org/user/karalius/
/var/spool/cyrus/domain/patirtis.org/user/vladas/
/var/spool/cyrus/user/vladas/

> # sendmail -bv vladas!on.lt, karalius!patirtis.org
> vladas!on.lt... deliverable: mailer cyrusv2, user vladas
> karalius!patirtis.org... deliverable: mailer cyrusv2, user karalius

Congrats! Unfortunately, despite a local mail and also telnet from home 
via sala.online.lt is going to karalius!patirtis.org successfully, but 
returns DSN 550 error: "User unknown or there is no mailbox associated 
with this name". And letters sent to vladas!patirtis.org arrive in my 
mailbox vladas!on.lt, although there are no such alias. A remote mail to 
patirtis.org returns a bit different DSN 550 5.7.1 error code: "Relay 
denied".

Perhaps external LDAP or some special authentication should be 
established for virtual domains? I did not limit default authentication:

> sasl_pwcheck_method: saslauthd pwcheck auxprop

in imapd.conf and the following line in Sendmail.conf:

> pwcheck_method: saslauthd

What have I done wrong?

Vladas

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