Debug: open(/proc/self/io) failed: Permission denied
Hi, I've seen a few emails over the years related to this error message, but they are typically associated with doveadm. In my case, it's related to dovecot itself.
I've just set up dovecot-2.3.20-1.fc37.x86_64 on fedora37 and unable to receive mail. The main config was copied over from another dovecot system on fedora37 with virtually identical settings, including the same SSL cert. I've also tried to just migrate the important stuff and otherwise leave the defaults, but I'm having the same problem.
imap(bcc-user)<2977522><rappeBf6vLZEw8Eq>: Debug: Loading modules from directory: /usr/lib64/dovecot imap(bcc-user)<2977522><rappeBf6vLZEw8Eq>: Debug: Module loaded: /usr/lib64/dovecot/lib20_listescape_plugin.so imap(bcc-user)<2977522><rappeBf6vLZEw8Eq>: Debug: Effective uid=1001, gid=1001, home=/home/bcc-user imap(bcc-user)<2977522><rappeBf6vLZEw8Eq>: Debug: open(/proc/self/io) failed: Permission denied imap(bcc-user)<2977522><rappeBf6vLZEw8Eq>: Debug: Namespace inbox: type=private, prefix=, sep=, inbox=yes, hidden=no, list=yes, subscriptions=yes location=mbox:~/mail:INBOX=/var/spool/mail/bcc-user imap(bcc-user)<2977522><rappeBf6vLZEw8Eq>: Debug: fs: root=/home/bcc-user/mail, index=, indexpvt=, control=, inbox=/var/spool/mail/bcc-user, alt= imap(bcc-user)<2977522><rappeBf6vLZEw8Eq>: Debug: Mailbox Trash: Mailbox opened
I've set the /var/spool/mail/bcc-user permissions to 600, bcc-user:mail. The /home/bcc-user directory is 611, bcc-user:bcc-user.
Here is my doveconf -n:
# 2.3.20 (80a5ac675d): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.20 (149edcf2) # OS: Linux 6.1.15-200.fc37.x86_64 x86_64 Fedora release 37 (Thirty Seven) auth_debug = yes auth_verbose = yes mail_debug = yes mail_gid = mail mail_home = mail/ mail_location = mbox:~/mail:INBOX=/var/spool/mail/%u mail_max_userip_connections = 500 mail_plugins = " listescape" mail_privileged_group = mail 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 mbox_write_locks = fcntl 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 { driver = pam } protocols = imap service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } } service imap-login { inet_listener imap { port = 0 } inet_listener imaps { port = 993 } process_min_avail = 6 service_count = 0 vsz_limit = 512 M } ssl_cert =
Any ideas greatly appreciated. I was very surprised to be having problems after having done this so many times before.
You can get rid of the debug message with
import_environment = $import_environment PR_SET_DUMPABLE=2
or setting
sysctl fs.suid_dumpable=2
Aki
On 24/04/2023 19:47 EEST Alex mysqlstudent@gmail.com wrote:
Hi, I've seen a few emails over the years related to this error message, but they are typically associated with doveadm. In my case, it's related to dovecot itself.
I've just set up dovecot-2.3.20-1.fc37.x86_64 on fedora37 and unable to receive mail. The main config was copied over from another dovecot system on fedora37 with virtually identical settings, including the same SSL cert. I've also tried to just migrate the important stuff and otherwise leave the defaults, but I'm having the same problem.
imap(bcc-user)<2977522><rappeBf6vLZEw8Eq>: Debug: Loading modules from directory: /usr/lib64/dovecot imap(bcc-user)<2977522><rappeBf6vLZEw8Eq>: Debug: Module loaded: /usr/lib64/dovecot/lib20_listescape_plugin.so imap(bcc-user)<2977522><rappeBf6vLZEw8Eq>: Debug: Effective uid=1001, gid=1001, home=/home/bcc-user imap(bcc-user)<2977522><rappeBf6vLZEw8Eq>: Debug: open(/proc/self/io) failed: Permission denied imap(bcc-user)<2977522><rappeBf6vLZEw8Eq>: Debug: Namespace inbox: type=private, prefix=, sep=, inbox=yes, hidden=no, list=yes, subscriptions=yes location=mbox:~/mail:INBOX=/var/spool/mail/bcc-user imap(bcc-user)<2977522><rappeBf6vLZEw8Eq>: Debug: fs: root=/home/bcc-user/mail, index=, indexpvt=, control=, inbox=/var/spool/mail/bcc-user, alt= imap(bcc-user)<2977522><rappeBf6vLZEw8Eq>: Debug: Mailbox Trash: Mailbox opened
I've set the /var/spool/mail/bcc-user permissions to 600, bcc-user:mail. The /home/bcc-user directory is 611, bcc-user:bcc-user.
Here is my doveconf -n:
# 2.3.20 (80a5ac675d): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.20 (149edcf2) # OS: Linux 6.1.15-200.fc37.x86_64 x86_64 Fedora release 37 (Thirty Seven) auth_debug = yes auth_verbose = yes mail_debug = yes mail_gid = mail mail_home = mail/ mail_location = mbox:~/mail:INBOX=/var/spool/mail/%u mail_max_userip_connections = 500 mail_plugins = " listescape" mail_privileged_group = mail 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 mbox_write_locks = fcntl 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 { driver = pam } protocols = imap service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } } service imap-login { inet_listener imap { port = 0 } inet_listener imaps { port = 993 } process_min_avail = 6 service_count = 0 vsz_limit = 512 M } ssl_cert =
Any ideas greatly appreciated. I was very surprised to be having problems after having done this so many times before.
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Hi,
On Mon, Apr 24, 2023 at 1:34 PM Aki Tuomi aki.tuomi@open-xchange.com wrote:
You can get rid of the debug message with
import_environment = $import_environment PR_SET_DUMPABLE=2
or setting
sysctl fs.suid_dumpable=2
Thanks so much - that appears to have fixed it. What does that do, and any idea why it wasn't necessary on my other fedora37 system with the same configuration? It appears to be related to allowing core dumps, but I don't understand how that is relevant here.
Thanks, Alex
Hi, I got same problem!
# 2.3.21 (47349e2482): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.21 (f6cd4b8e) # OS: Linux 6.8.0-41-generic x86_64 Ubuntu 24.04.1 LTS auth_debug = yes auth_debug_passwords = yes auth_mechanisms = plain login auth_username_format = %Ln auth_verbose = yes auth_verbose_passwords = plain debug_log_path = /var/log/dovecot-debug.log info_log_path = /var/log/dovecot-info.log log_path = /var/log/dovecot.log mail_debug = yes mail_location = maildir:~/Maildir/ mbox_write_locks = fcntl 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 { driver = pam } protocols = imap pop3 lmtp service auth { unix_listener /var/spool/postfix/private/auth { group = mail mode = 0660 user = postfix } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = mail mode = 0660 user = postfix } } ssl_cert =
If you mean the debug message, its just a debug message, not a problem. If you need bytes_in/out metrics you can use import_environment = $import_environment PR_SET_DUMPABLE=2 Aki On 31/08/2024 13:12 EEST ljakku77--- via dovecot dovecot@dovecot.org wrote: Hi, I got same problem! # 2.3.21 (47349e2482): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.21 (f6cd4b8e) # OS: Linux 6.8.0-41-generic x86_64 Ubuntu 24.04.1 LTS auth_debug = yes auth_debug_passwords = yes auth_mechanisms = plain login auth_username_format = %Ln auth_verbose = yes auth_verbose_passwords = plain debug_log_path = /var/log/dovecot-debug.log info_log_path = /var/log/dovecot-info.log log_path = /var/log/dovecot.log mail_debug = yes mail_location = maildir:~/Maildir/ mbox_write_locks = fcntl 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 { driver = pam } protocols = imap pop3 lmtp service auth { unix_listener /var/spool/postfix/private/auth { group = mail mode = 0660 user = postfix } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = mail mode = 0660 user = postfix } } ssl_cert =
ok, so I can ignore it.. but I don't receive mails for some reason.. Here's my postfix config..
alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases append_dot_mydomain = no biff = no compatibility_level = 2 inet_interfaces = all inet_protocols = ipv4 mailbox_size_limit = 0 mailbox_transport = lmtp:unix:private/dovecot-lmtp message_size_limit = 204857600 milter_default_action = accept milter_mail_macros = i {mail_addr} {client_addr} {client_name} {auth_type} {auth_authen} milter_protocol = 2 mydestination = <domains> localhost.localdomain localhost mydomain = lja.fi myhostname = mail.lja.fi mynetworks = 127.0.0.0/8 192.168.1.0/24 myorigin = /etc/mailname non_smtpd_milters = $smtpd_milters recipient_delimiter = + relayhost = <ISP email relay that is ok> smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd smtp_sasl_security_options = noanonymous smtp_tls_ciphers = high smtp_tls_security_level = encrypt smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache smtp_tls_wrappermode = yes smtp_use_tls = yes smtpd_milters = inet:localhost:8895, inet:localhost:8892 smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination smtpd_sasl_auth_enable = yes smtpd_sasl_path = private/auth smtpd_sasl_type = dovecot smtpd_tls_CAfile = /etc/letsencrypt/live/domain/chain.pem smtpd_tls_cert_file = /etc/letsencrypt/live/domain/fullchain.pem smtpd_tls_ciphers = high smtpd_tls_key_file = /etc/letsencrypt/live/domain/privkey.pem smtpd_tls_loglevel = 2 virtual_maps = hash:/etc/postfix/virtual virtual_transport = lmtp:unix:private/dovecot-lmtp
.. could you please help me to get things working ? :)
participants (3)
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Aki Tuomi
-
Alex
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ljakku77＠gmail.com