Hi,

Toni Mueller, 27.12.20:
16:04:16 dovecot: lda([email protected])<5291><DDxBHYCw6F+rFAAApiCoHg>: Error: 
Mailbox INBOX: Failed to autocreate mailbox: Mailbox INBOX: 
open(/var/mail/[email protected]) failed: Permission denied (euid=12345(mailbox) 
egid=12345(mailbox) missing +w perm: /var/mail, we're not in group 8(mail), dir owned by 
0:8 mode=0775)
16:04:16 dovecot: lda([email protected])<5291><DDxBHYCw6F+rFAAApiCoHg>: 
msgid=<[email protected]>: save failed to open mailbox INBOX: 
Mailbox INBOX: Failed to autocreate mailbox: Mailbox INBOX: open(/var/mail/[email protected]) 
failed: Permission denied (euid=12345(mailbox) egid=12345(mailbox) missing +w perm: /var/mail, 
we're not in group 8(mail), dir owned by 0:8 mode=0775)
16:04:16 postfix/pipe[5284]: 8CD6CE072E: to=<[email protected]>, 
orig_to=<[email protected]>, relay=dovecot, delay=62083, delays=62083/0.04/0/0.04, 
dsn=4.3.0, status=deferred (temporary failure)


In /etc/postfix/master.cf, I have this to call it:

dovecot   unix  -       n       n       -       -       pipe
   flags=DRhu user=_mailbox argv=/usr/lib/dovecot/deliver -f ${sender} -d 
${user}@${domain} -a ${recipient}


I've tried strace-ing dovecot-lda, but it didn't really help me to
understand why it discards the result of the userdb lookup.


Can anyone please provide a cluebat, please?

I'd change the setup towards postfix handing over the messages to dovecot via lmtp.

You can easily achive this by setting
relay_domains = btree:/etc/postfix/relay-transport
in your postfix configuration and creating a file /etc/postfix/relay-transport:
your_mail_domain  lmtp:unix:private/lmtp-dovecot

Mit freundlichen Grüßen
Christian Schmidt

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