First time setting up my own mail server on a machine running the latest Ubuntu
After looking around i decided on dovecot + postfix and Virtual users with mailboxes in /var/mail/vmail/%d/%n
For the most part, i followed the Taking back email tutorial series found here
I noticed that when i try to connect via IMAP to me@mydomain.com the correct directory structure is created so /var/mail/vmail/mydomain.com/me exists and has the needed files in it.
However, when i receive mail on that server through SMTP, there seems to be a point in the whole chain of commands from Postfix to Dovecot where the domain part %d becomes empty and thus it tries to access and create wrong the directories and fail with this error:
Jan 25 17:47:35 lda(me): Debug: Effective uid=1000, gid=1000, home=/home/me
Jan 25 17:47:35 lda(me): Debug: Namespace inbox: type=private, prefix=, sep=, inbox=yes, hidden=no, list=yes, subscriptions=yes location=maildir:/var/mail/vmail//me/mail:LAYOUT=fs
Jan 25 17:47:35 lda(me): Debug: fs: root=/var/mail/vmail//me/mail, index=, indexpvt=, control=, inbox=/var/mail/vmail//me/mail, alt=
Jan 25 17:47:35 lda(me): Debug: Namespace : /var/mail/vmail//me/mail doesn't exist yet, using default permissions
Jan 25 17:47:35 lda(me): Debug: Namespace : Using permissions from /var/mail/vmail//me/mail: mode=0700 gid=default
Jan 25 17:47:35 lda(me): Error: User initialization failed: Namespace '': mkdir(/var/mail/vmail//me/mail) failed: Permission denied (euid=1000(me) egid=1000(me) missing +w perm: /var/mail/vmail/, we're not in group 5000(vmail), dir owned by 5000:5000 mode=0775)
Jan 25 17:47:35 lda(me): Fatal: Invalid user settings. Refer to server log for more information.
/var/mail/vmail is owned by vmail:vmail (5000) and even though it shouldn't be necessary, i temporarily added user me to the vmail group.
I'm not sure how to proceed to debug this, i have turned on verbose modes for everything i could find from postfix to dovecot but from the logs that i get i can't pinpoint the exact source of the problem.
Here is the relevant part of my postfix master.cf
dovecot unix - n n - - pipe
flags=DRhu user=vmail:vmail argv=/usr/lib/dovecot/deliver
-f ${sender} -d ${recipient}
Any kind of help or suggestion is greatly appreciated
Update 1
It turns out that there was a mailbox_command that wasn't correctly set in postfix so i changed it from
#mailbox_command = /usr/lib/dovecot/deliver -c /etc/dovecot/dovecot.conf -m "${EXTENSION}"
to
mailbox_command = /usr/lib/dovecot/deliver -c /etc/dovecot/dovecot.conf -f "${SENDER}" -d "${RECIPIENT}"
And now i don't get the permission denied error, but i'm still unable to receive emails
mail location settings are:
mail_home = /var/mail/vmail/%d/%n
mail_location = maildir:/var/mail/vmail/%d/%n/mail:LAYOUT=fs
The contents of virtual-mailbox-users is:
me@mydomain.com mydomain.com/me
And yup i did postmap that file after every modification
I noticed a few other warnings/errors:
Jan 25 20:43:29 linux2-dkhalife postfix/smtpd[8277]: warning: SASL: Connect to private/dovecot-auth failed: Connection refused
Jan 25 20:43:29 linux2-dkhalife postfix/smtpd[8277]: fatal: no SASL authentication mechanisms
Jan 25 20:42:26 linux2-dkhalife postfix/smtpd[8274]: warning: connect to Milter service unix:/var/spool/postfix/spamassassin/spamd.sock: No such file or directory
Jan 25 20:42:26 linux2-dkhalife postfix/smtpd[8274]: warning: connect to Milter service unix:/var/run/clamav/clamav-milter.ctl: No such file or directory
Jan 25 20:42:26 linux2-dkhalife postfix/smtpd[8274]: warning: connect to Milter service unix:/var/run/opendkim/opendkim.sock: No such file or directory
Update 2
doveconf -n outputs version 2.2.18 and the following :
auth_mechanisms = plain login
mail_debug = yes
mail_home = /var/mail/vmail/%d/%n
mail_location = maildir:/var/mail/vmail/%d/%n/mail:LAYOUT=fs
mail_privileged_group = vmail
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
namespace inbox {
inbox = yes
location =
mailbox Drafts {
auto = subscribe
special_use = \Drafts
}
mailbox Junk {
auto = subscribe
special_use = \Junk
}
mailbox Sent {
auto = subscribe
special_use = \Sent
}
mailbox "Sent Messages" {
auto = subscribe
special_use = \Sent
}
mailbox Trash {
auto = subscribe
special_use = \Trash
}
prefix =
}
passdb {
args = username_format=%u scheme=ssha512 /etc/dovecot/passwd.db
driver = passwd-file
}
plugin {
sieve = ~/.dovecot.sieve
sieve_after = /var/mail/vmail/sieve-after
sieve_before = /var/mail/vmail/sieve-before
sieve_dir = ~/sieve
}
protocols = imap pop3 sieve
service auth {
unix_listener /var/spool/postfix/private/auth {
group = postfix
mode = 0660
user = postfix
}
}
ssl_cert = </etc/ssl/private/mail_mydomain_com.pem
ssl_cipher_list = ECDH+AESGCM:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:ECDH+3DES:DH+3DES:RSA+AES:RSA+3DES:!ADH:!AECDH:!MD5:!DSS
ssl_client_ca_dir = /etc/ssl/certs
ssl_key = </etc/ssl/private/mail_mydomain_com.key
userdb {
args = uid=5000 gid=5000 home=/var/mail/vmail/%d/%n
driver = static
}
protocol imap {
imap_client_workarounds = delay-newmail tb-extra-mailbox-sep
mail_max_userip_connections = 10
}
protocol pop3 {
mail_max_userip_connections = 10
pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
}
protocol lda {
deliver_log_format = msgid=%m: %$
mail_plugins = sieve
postmaster_address = postmaster@mydomain.com
quota_full_tempfail = yes
rejection_reason = Your message to <%t> was automatically rejected:%n%r
}
postconf -n outputs version 2.11.3 and the following :
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
biff = no
broken_sasl_auth_clients = yes
canonical_maps = hash:/etc/postfix/canonical
config_directory = /etc/postfix
default_destination_concurrency_limit = 5
disable_vrfy_command = yes
dovecot_destination_recipient_limit = 1
home_mailbox = Maildir/
inet_interfaces = all
inet_protocols = all
local_recipient_maps =
mailbox_command = /usr/lib/dovecot/deliver -c /etc/dovecot/dovecot.conf -f "${SENDER}" -d "${RECIPIENT}"
mailbox_size_limit = 0
message_size_limit = 104857600
milter_connect_macros = j {daemon_name} v {if_name} _
milter_default_action = accept
mydestination = mydomain.com, myotherdomain.ca, localhost
mydomain = mydomain.com
myhostname = mail.mydomain.com
mynetworks = 127.0.0.0/8 10.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
myorigin = /etc/mailname
non_smtpd_milters = $smtpd_milters
readme_directory = no
recipient_delimiter = +
relay_destination_concurrency_limit = 1
relayhost =
smtp_tls_note_starttls_offer = yes
smtp_tls_security_level = may
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtp_use_tls = yes
smtpd_banner = $myhostname ESMTP
smtpd_helo_required = yes
smtpd_helo_restrictions = permit_mynetworks reject_non_fqdn_helo_hostname, reject_invalid_helo_hostname, reject_unknown_helo_hostname, permit
smtpd_milters = unix:/var/spool/postfix/spamassassin/spamd.sock unix:/var/run/clamav/clamav-milter.ctl unix:/var/run/opendkim/opendkim.sock
smtpd_recipient_restrictions = reject_unknown_client_hostname, reject_unknown_sender_domain, reject_unknown_recipient_domain, reject_unauth_pipelining, permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, reject_invalid_hostname, reject_non_fqdn_sender
smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
smtpd_sasl_auth_enable = yes
smtpd_sasl_authenticated_header = yes
smtpd_sasl_local_domain = $myhostname
smtpd_sasl_path = /var/spool/postfix/private/dovecot-auth
smtpd_sasl_security_options = noanonymous
smtpd_sasl_type = dovecot
smtpd_sender_login_maps = $virtual_mailbox_maps
smtpd_sender_restrictions = reject_unknown_sender_domain, reject_sender_login_mismatch
smtpd_tls_CAfile = /etc/ssl/certs/ca-certificates.crt
smtpd_tls_ask_ccert = yes
smtpd_tls_auth_only = yes
smtpd_tls_cert_file = /etc/ssl/private/mail_mydomain_com.pem
smtpd_tls_ciphers = high
smtpd_tls_key_file = /etc/ssl/private/mail_mydomain_com.key
smtpd_tls_loglevel = 0
smtpd_tls_mandatory_ciphers = medium
smtpd_tls_mandatory_protocols = SSLv3, TLSv1
smtpd_tls_received_header = yes
smtpd_tls_security_level = may
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtpd_tls_session_cache_timeout = 3600s
smtpd_use_tls = yes
tls_random_source = dev:/dev/urandom
unknown_address_reject_code = 550
unknown_client_reject_code = 550
unknown_hostname_reject_code = 550
virtual_alias_maps = hash:/etc/postfix/virtual
virtual_mailbox_base = /var/mail/vmail
virtual_mailbox_domains = hash:/etc/postfix/virtual-mailbox-domains
virtual_mailbox_maps = hash:/etc/postfix/virtual-mailbox-users
virtual_transport = dovecot
