Dovecot-lda permission errors or maybe authentication errors?

Wed Nov 5 14:24:00 UTC 2014

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On Wed, 5 Nov 2014, Robert Kryger wrote:

> Output of ls -nal /home/user1:
>
>> Nov 04 08:47:29 lda(user1): Error: chdir(/home/user1/) failed:
>> Permission denied (euid=524(user1) egid=524(user1) stat() failed: No
>> such file or directory, euid is not dir owner)

> total 156
> drwx------.  6 524 524  4096 Nov  5 08:27 .

This list doesn't seem to fit the error message, because user 524 is 
owning this dir and has full access permissions. Maybe, are you running 
some protection software, like SELinux, AppArmor, ..., which prevents 
access to this directory?

Just to raise the obvious: "/" and "/home" do allow "x"-permission for 
user #524, don't they?

> drwxr-xr-x. 34   0   0  4096 Oct  4 14:06 ..
> -rw-------.  1 524 524  1148 Oct 15 13:44 .bash_history
> -rw-r--r--.  1 524 524    18 Sep 25 22:13 .bash_logout
> -rw-r--r--.  1 524 524   176 Sep 25 22:13 .bash_profile
> -rw-r--r--.  1 524 524   124 Sep 25 22:13 .bashrc
> -rw-r--r--.  1   0   0  1362 Nov  4 08:45 config.txt
> -rw-r--r--.  1 524 524    75 Oct  6 11:39 .forward_old
> -rw-r--r--.  1   0   0    37 Oct 26 19:09 .forward_test_lda
> -rw-------.  1 524 524    55 Oct 12 20:12 .lesshst
> -rw-r--r--.  1   0   0  1062 Nov  4 08:50 log1.log
> -rw-r--r--.  1   0   0  1246 Nov  4 08:49 log2.log
> drwxrw----. 35 524 524  4096 Nov  5 08:24 Maildir
> drwxr-----. 35   0   0  4096 Oct 29 09:03 Maildirsave
> drwxr-xr-x.  4 524 524  4096 May  6  2014 .mozilla
> -rw-r--r--.  1 524 524    92 Oct 12 20:20 .procmailrc
> -rw-r--r--.  1 524 524  1213 Oct  5 19:56 .procmailrc_old
> -rw-r--r--.  1 524 524    92 Oct  6 10:27 .procmailrc_old2
> -rw-r--r--.  1   0   0     0 Nov  5 08:27 question1.txt
> drwx------.  2 524 524  4096 Oct 14 16:02 .ssh
> -rw-rw-r--.  1 524 524   152 Oct  6 10:25 testmessage.txt
> -rwxr-xr-x.  1 524 524    87 Oct  6 13:59 testscript
> -rw-rw-r--.  1 524 524 60810 Oct 27 16:57 top.log
> -rw-r--r--.  1   0   0     6 Nov  4 08:45 version.txt
> -rw-------.  1 524 524  3973 Oct 27 16:58 .viminfo
>
> -----Original Message-----
> From: Steffen Kaiser [mailto:skdovecot at smail.inf.fh-brs.de]
> Sent: Wednesday, November 05, 2014 5:26 AM
> To: Robert Kryger
> Cc: dovecot at dovecot.org
> Subject: Re: Dovecot-lda permission errors or maybe authentication errors?
>
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> On Tue, 4 Nov 2014, Robert Kryger wrote:
>
>> I have tried to specify the dovecot-lda in two ways.  First, in the
>> /etc/postfix/main.cf file:
>>
>> mailbox_command = /usr/libexec/dovecot/dovecot-lda -f "$SENDER" -a
>> "$RECIPIENT"
>>
>> or alternatively, I leave the mailbox_command blank and specify the
>> following in the .forward file of a test user:
>>
>> | "/usr/libexec/dovecot/dovecot-lda"
>>
>> Either approach gives me the same error(s).  When a mail message is
>> sent to the test user USER1, the following errors appear in the
>> dovecot-lda error
>> file:
>>
>> Nov 04 08:47:29 lda(user1): Error: chdir(/home/user1/) failed:
>> Permission denied (euid=524(user1) egid=524(user1) stat() failed: No
>> such file or directory, euid is not dir owner) Nov 04 08:47:29 lda(user1):
> Error:
>> chdir(/home/user1) failed: Permission denied Nov 04 08:47:29 lda(user1):
>> Error: user user1: Initialization failed: Namespace 'INBOX.':
>> stat(/home/user1/Maildir) failed: Permission denied (euid=524(user1)
>> egid=524(user1) stat() failed: No such file or directory, euid is not
>> dir
>> owner) Nov 04 08:47:29 lda(user1): Fatal: Invalid user settings. Refer
>> to server log for more information.
>>
>> Nov 04 08:47:29 lda(user1): Error: chdir(/home/user1/) failed:
>> Permission denied (euid=524(user1) egid=524(user1) stat() failed: No
>> such file or directory, euid is not dir owner) Nov 04 08:47:29 lda(user1):
> Error:
>> chdir(/home/user1) failed: Permission denied Nov 04 08:47:29 lda(user1):
>> Error: user user1: Initialization failed: Namespace 'INBOX.':
>> stat(/home/user1/Maildir) failed: Permission denied (euid=524(user1)
>> egid=524(user1) stat() failed: No such file or directory, euid is not
>> dir
>> owner) Nov 04 08:47:29 lda(user1): Fatal: Invalid user settings. Refer
>> to server log for more information.
>>
>> At first, I interpreted this to mean the file permissions were not set
>> correctly on the home directory or the Maildir folder.  However, I
>> have opened these up to full rwx access for everyone and I still get
>> the same errors.  Alternatively, perhaps this is related somehow to
>> the dovecot-lda authentication process via the password or user
>> databases, but I can't make any sense of the documentation.
>
> What's the output of:
>
> ls -nal /home/user1
>
> - --
> Steffen Kaiser
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> gpg: Signature made Wed 05 Nov 2014 11:26:03 AM CET using RSA key ID 0BFDDF6B
> gpg: BAD signature from "Steffen Kaiser <skdovecot at smail.inf.fh-brs.de>"
>

- -- 
Steffen Kaiser
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