Problem with Log-File

[Volf, Ronald (IRV)]

Hello !   
 
We want to log error in a File directly : /var/log/IRV_MdM/Dovecot_main.log.
 
We got this error: 'Can't open log file /var/log/IRV_MdM/Dovecot_main.log:
Permission denied'
 
Please have a look at our Problem. Is it a bug or an incorrect config ?
 
Our Dir-Structure is: (for testing, we changed all to mod 777)
    2021-05-03 04:29:32 IRV-20210501-V02-rvh:~ # dir -d /var/  /var/log/
/var/log/IRV_MdM/ /var/log/IRV_MdM/Dovecot_main.log
    drwxrwxrwx 11 root    root     4096 2021-04-30 20:36:51 /var/
    drwxrwxrwx 21 root    root     4096 2021-05-03 02:53:34 /var/log/
    drwxrwxrwx  4 IRV_MdM IRV_MdMG 4096 2021-05-03 04:28:09
/var/log/IRV_MdM/
    -rwxrwxrwx  1 IRV_MdM IRV_MdMG   14 2021-05-03 01:36:18
/var/log/IRV_MdM/Dovecot_main.log
    2021-05-03 04:29:48 IRV-20210501-V02-rvh:~ #
 
Version:
    2021-05-03 04:28:05 IRV-20210501-V02-rvh:~ # dovecot --version
    2.3.14 (cee3cbc0d)
    2021-05-03 04:28:12 IRV-20210501-V02-rvh:~ #
 
Logs:
    2021-05-03 04:28:51 IRV-20210501-V02-rvh:~ # doveadm log find
    Debug: /var/log/IRV_MdM/Dovecot_main.log
    Info: /var/log/IRV_MdM/Dovecot_main.log
    Warning: /var/log/IRV_MdM/Dovecot_main.log
    Error: /var/log/IRV_MdM/Dovecot_main.log
    Fatal: /var/log/IRV_MdM/Dovecot_main.log
 
Config:
    2021-05-03 04:45:27 IRV-20210501-V02-rvh:~ # dovecot -n
    # 2.3.14 (cee3cbc0d): /etc/dovecot/dovecot.conf
    # Pigeonhole version 0.5.14 (1b5c82b2)
    # OS: Linux 5.12.0-1-default x86_64  ext3
    # Hostname: IRV-20210501-V02-rvh
    auth_cache_size = 20 M
    auth_debug = yes
    auth_debug_passwords = yes
    auth_verbose = yes
    auth_verbose_passwords = plain
    default_internal_user = IRV_MdM
    default_login_user = IRV_MdM_Login
    deliver_log_format = msgid=%m: %$ (From=%f, To=%t, Subject=%s,
Size=%p/%w, Dsn=%{storage_id})
    disable_plaintext_auth = no
    first_valid_uid = 10000
    last_valid_gid = 49999
    last_valid_uid = 49999
    listen = *
    log_path = /var/log/IRV_MdM/Dovecot_main.log
    log_timestamp = "%Y-%m-%d %H:%M:%S "
    login_greeting = Welcome to the INetS - Multi-Device-Mail-Server.
    mail_access_groups = IRV_MdMG
    mail_debug = yes
    mail_location =
maildir:/var/spool/IRV_MdM/User/%u/Mail:CONTROL=/var/spool/IRV_MdM/User/%u/C
trl:INDEX=/var/spool/IRV_MdM/User/%u/Index:LAYOUT=fs
    mail_temp_dir = /var/spool/IRV_MdM/Tmp
    managesieve_notify_capability = mailto
    managesieve_sieve_capability = fileinto reject envelope
encoded-character vacation subaddress comparator-i;ascii-numeric relational
regex imap4flags copy include variables body enotify environment mailbox
date index ihave duplicate mime foreverypart extracttext
    namespace inbox {
      inbox = yes
      location =
      mailbox Drafts {
        special_use = \Drafts
      }
      mailbox Junk {
        special_use = \Junk
      }
      mailbox Sent {
        special_use = \Sent
      }
      mailbox "Sent Messages" {
        special_use = \Sent
      }
      mailbox Trash {
        special_use = \Trash
      }
      prefix =
    }
    passdb {
      args = /etc/dovecot/dovecot-sql.conf.ext
      driver = sql
    }
    plugin {
      sieve = file:~/sieve;active=~/.dovecot.sieve
    }
    pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
    postmaster_address =  <mailto:Support at IRV.at> Support at IRV.at
    ssl_cert = /Apps_IRV/Web/Cert/IRV_star_irv_at/IRV_STAR_irv_at.Crt.crt
    ssl_cipher_list =
ALL:!aNULL:!eNULL:!EXPORT:!DES:!3DES:!MD5:!PSK:!RC4:!ADH:!LOW at STRENGTH
    ssl_key = # hidden, use -P to show it
    ssl_options = no_compression
    ssl_prefer_server_ciphers = yes
    userdb {
      driver = prefetch
    }
    userdb {
      args = /etc/dovecot/dovecot-sql.conf.ext
      driver = sql
    }
    verbose_proctitle = yes
    2021-05-03 04:45:42 IRV-20210501-V02-rvh:~ #
 
OS:
    2021-05-03 04:45:42 IRV-20210501-V02-rvh:~ # i_ver
      Isg-Release: Version = 07.00.22 from 2021-01-22 21:13.
    Linux-Release: openSUSE Tumbleweed 20210430 Linux 5.12.0-1-default
x86_64.
    2021-05-03 05:13:01 IRV-20210501-V02-rvh:~ #

Please send the reply to Support at IRV.at. 
 
Mit freundlichen Grüßen  / with best regards
 
Ing. Ronald VOLF
 

 <http://www.irv.at/>  
IRV Datenverarbeitung GmbH 

Internet:
 <http://www.irv.at/> www.irv.at 
 

Mail:
 <mailto:Sales at IRV.at> Sales at IRV.at 
 

Tel.:
(+43-2236)  2236 7 *
 

Fax:
(+43-2236)  2191 7 / 30 
 

Addr.:
Brown Boveri Strasse 6, Top 18
2351 Wr. Neudorf, Austria 
 
 
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