Re: Problem with dovecot?

["Knute Johnson" <knute@xxxxxxxxxxx>]

Ankush:

The file is below with all the comments taken out and and then again 
with all the comments in.  Thanks,

knute...

protocols = pop3s

pop3s_listen = [::]

ssl_disable = no

ssl_cert_file = /usr/share/ssl/certs/dovecot.pem
ssl_key_file = /usr/share/ssl/private/dovecot.pem

ssl_parameters_file = /var/run/dovecot/ssl-parameters.dat

ssl_parameters_regenerate = 24

disable_plaintext_auth = no 

login_chroot = yes


login = pop3

login_user = dovecot
login_processes_count = 1

verbose_proctitle = yes

verbose_ssl = yes

mbox_locks = fcntl

auth = default

auth_mechanisms = plain

auth_userdb = passwd

auth_passdb = pam

auth_verbose = yes

auth_debug = yes


####################################################################

## Dovecot 1.0 configuration file

# Base directory where to store runtime data.
#base_dir = /var/run/dovecot/

# Protocols we want to be serving:
#  imap imaps pop3 pop3s
#protocols = imap imaps pop3 pop3s
protocols = pop3s

# IP or host address where to listen in for connections. It's not 
currently
# possible to specify multiple addresses. "*" listens in all IPv4 
interfaces.
# "[::]" listens in all IPv6 interfaces, but may also listen in all 
IPv4
# interfaces depending on the operating system. You can specify ports 
with
# "host:port".
#imap_listen = [::]
#pop3_listen = [::]

# IP or host address where to listen in for SSL connections. Defaults
# to above non-SSL equilevants if not specified.
#imaps_listen = [::]
pop3s_listen = [::]

# Disable SSL/TLS support.
ssl_disable = no

# PEM encoded X.509 SSL/TLS certificate and private key. They're 
opened before
# dropping root privileges, so keep the key file unreadable by anyone 
but
# root. Included doc/mkcert.sh can be used to easily generate self-
signed
# certificate, just make sure to update the domains in dovecot-
openssl.cnf
ssl_cert_file = /usr/share/ssl/certs/dovecot.pem
ssl_key_file = /usr/share/ssl/private/dovecot.pem

# SSL parameter file. Master process generates this file for login 
processes.
# It contains Diffie Hellman and RSA parameters.
ssl_parameters_file = /var/run/dovecot/ssl-parameters.dat

# How often to regenerate the SSL parameters file. Generation is 
quite CPU
# intensive operation. The value is in hours, 0 disables regeneration
# entirely.
ssl_parameters_regenerate = 24

# Disable LOGIN command and all other plaintext authentications 
unless
# SSL/TLS is used (LOGINDISABLED capability). Note that 127.*.*.* and
# IPv6 ::1 addresses are considered secure, this setting has no 
effect if
# you connect from those addresses.
disable_plaintext_auth = no 

# Use this logfile instead of syslog(). /dev/stderr can be used if 
you want to
# use stderr for logging (ONLY /dev/stderr - otherwise it is closed).
#log_path = 

# For informational messages, use this logfile instead of the default
#info_log_path = 

# Prefix for each line written to log file. % codes are in 
strftime(3)
# format.
#log_timestamp = "%b %d %H:%M:%S "

##
## Login processes
##

# Directory where authentication process places authentication UNIX 
sockets
# which login needs to be able to connect to. The sockets are created 
when
# running as root, so you don't have to worry about permissions. Note 
that
# everything in this directory is deleted when Dovecot is started.
#login_dir = /var/run/dovecot-login

# chroot login process to the login_dir. Only reason not to do this 
is if you
# wish to run the whole Dovecot without roots.
# http://wiki.dovecot.org/Rootless
#login_chroot = no
login_chroot = yes


##
## IMAP login process
##

#login = imap

# Executable location.
#login_executable = /usr/libexec/dovecot/imap-login

# User to use for the login process. Create a completely new user for 
this,
# and don't use it anywhere else. The user must also belong to a 
group where
# only it has access, it's used to control access for authentication 
process.
# Note that this user is NOT used to access mails.
# http://wiki.dovecot.org/UserIds
#login_user = dovecot

# Set max. process size in megabytes. If you don't use
# login_process_per_connection you might need to grow this.
#login_process_size = 32

# Should each login be processed in it's own process (yes), or should 
one
# login process be allowed to process multiple connections (no)? Yes 
is more
# secure, espcially with SSL/TLS enabled. No is faster since there's 
no need
# to create processes all the time.
#login_process_per_connection = yes

# Number of login processes to create. If login_process_per_user is
# yes, this is the number of extra processes waiting for users to log 
in.
#login_processes_count = 3

# Maximum number of extra login processes to create. The extra 
process count
# usually stays at login_processes_count, but when multiple users 
start logging
# in at the same time more extra processes are created. To prevent 
fork-bombing
# we check only once in a second if new processes should be created - 
if all
# of them are used at the time, we double their amount until limit 
set by this
# setting is reached. This setting is used only if 
login_process_per_use is yes.
#login_max_processes_count = 128

# Maximum number of connections allowed in login state. When this 
limit is
# reached, the oldest connections are dropped. If 
login_process_per_user
# is no, this is a per-process value, so the absolute maximum number 
of users
# logging in actually login_processes_count * max_logging_users.
#login_max_logging_users = 256

##
## POP3 login process
##

# Settings default to same as above, so you don't have to set 
anything
# unless you want to override them.

login = pop3

login_user = dovecot
login_processes_count = 1

# Exception to above rule being the executable location.
#login_executable = /usr/libexec/dovecot/pop3-login

##
## Mail processes
##

# Maximum number of running mail processes. When this limit is 
reached,
# new users aren't allowed to log in.
#max_mail_processes = 1024

# Show more verbose process titles (in ps). Currently shows user name 
and
# IP address. Useful for seeing who are actually using the IMAP 
processes
# (eg. shared mailboxes or if same uid is used for multiple 
accounts).
#verbose_proctitle = no
verbose_proctitle = yes

# Show protocol level SSL errors.
# verbose_ssl = no
verbose_ssl = yes

# Valid UID range for users, defaults to 500 and above. This is 
mostly
# to make sure that users can't log in as daemons or other system 
users.
# Note that denying root logins is hardcoded to dovecot binary and 
can't
# be done even if first_valid_uid is set to 0.
#first_valid_uid = 500
#last_valid_uid = 0

# Valid GID range for users, defaults to non-root/wheel. Users having
# non-valid GID as primary group ID aren't allowed to log in. If user
# belongs to supplementary groups with non-valid GIDs, those groups 
are
# not set.
#first_valid_gid = 1
#last_valid_gid = 0

# Grant access to these extra groups for mail processes. Typical use 
would be
# to give "mail" group write access to /var/mail to be able to create 
dotlocks.
#mail_extra_groups =

# ':' separated list of directories under which chrooting is allowed 
for mail
# processes (ie. /var/mail will allow chrooting to /var/mail/foo/bar 
too).
# This setting doesn't affect login_chroot or auth_chroot variables.
# WARNING: Never add directories here which local users can modify, 
that
# may lead to root exploit. Usually this should be done only if you 
don't
# allow shell access for users. See doc/configuration.txt for more 
information.
#valid_chroot_dirs = 

# Default chroot directory for mail processes. This can be overridden 
by
# giving /./ in user's home directory (eg. /home/./user chroots into 
/home).
#mail_chroot = 

# Default MAIL environment to use when it's not set. By leaving this 
empty
# dovecot tries to do some automatic detection as described in
# doc/mail-storages.txt. There's a few special variables you can use:
#
#   %u - username
#   %n - user part in user@domain, same as %u if there's no domain
#   %d - domain part in user@domain, empty if user there's no domain
#   %h - home directory
#
# You can also limit a width of string by giving the number of max. 
characters
# after the '%' character. For example %1u gives the first character 
of
# username. Some examples:
#
#   default_mail_env = maildir:/var/mail/%1u/%u/Maildir
#   default_mail_env = mbox:~/mail/:INBOX=/var/mail/%u
#   default_mail_env = mbox:/var/mail/%d/%n/:INDEX=/var/indexes/%d/%n
#
#default_mail_env = 

# Space-separated list of fields to cache for all mails. Currently 
these
# fields are allowed followed by a list of commands they speed up:
#
#  Envelope      - FETCH ENVELOPE and SEARCH FROM, TO, CC, BCC, 
SUBJECT,
#                  SENTBEFORE, SENTON, SENTSINCE, HEADER MESSAGE-ID,
#                  HEADER IN-REPLY-TO
#  Body          - FETCH BODY
#  Bodystructure - FETCH BODY, BODYSTRUCTURE
#  MessagePart   - FETCH BODY[1.2.3] (ie. body parts), RFC822.SIZE,
#                  SEARCH SMALLER, LARGER, also speeds up 
BODY/BODYSTRUCTURE
#                  generation. This is always set with mbox 
mailboxes, and
#                  also default with Maildir.
#
# Different IMAP clients work in different ways, that's why Dovecot 
by default
# only caches MessagePart which speeds up most operations. Whenever 
client
# does something where caching could be used, the field is 
automatically marked
# to be cached later. For example after FETCH BODY the BODY will be 
cached
# for all new messages. Normally you should leave this alone, unless 
you know
# what most of your IMAP clients are. Caching more fields than needed 
makes
# the index files larger and generate useless I/O.
#
# With maildir there's one extra optimization - if nothing is cached, 
indexing
# the maildir becomes much faster since it's not opening any of the 
mail files.
# This could be useful if your IMAP clients access only new mails.

#mail_cache_fields = MessagePart

# Space-separated list of fields that Dovecot should never set to be 
cached.
# Useful if you want to save disk space at the cost of more I/O when 
the fields
# needed.
#mail_never_cache_fields = 

# Workarounds for various client bugs:
#   oe6-fetch-no-newmail:
#     Never send EXISTS/RECENT when replying to FETCH command. 
Outlook Express
#     seems to think they are FETCH replies and gives user "Message 
no longer
#     in server" error. Note that OE6 still breaks even with this 
workaround
#     if synchronization is set to "Headers Only".
#   outlook-idle:
#     Outlook and Outlook Express never abort IDLE command, so if no 
mail
#     arrives in half a hour, Dovecot closes the connection. This is 
still
#     fine, except Outlook doesn't connect back so you don't see if 
new mail
#     arrives.
#   outlook-pop3-no-nuls:
#     Outlook and Outlook Express hang if mails contain NUL 
characters.
#     This setting replaces them with 0x80 character.
#client_workarounds = 

# Dovecot can notify client of new mail in selected mailbox soon 
after it's
# received. This setting specifies the minimum interval in seconds 
between
# new mail notifications to client - internally they may be checked 
more or
# less often. Setting this to 0 disables the checking.
# NOTE: Evolution client breaks with this option when it's trying to 
APPEND.
#mailbox_check_interval = 0

# Like mailbox_check_interval, but used for IDLE command.
#mailbox_idle_check_interval = 30

# Allow full filesystem access to clients. There's no access checks 
other than
# what the operating system does for the active UID/GID. It works 
with both
# maildir and mboxes, allowing you to prefix mailboxes names with eg. 
/path/
# or ~user/.
#mail_full_filesystem_access = no

# Maximum allowed length for custom flag name. It's only forced when 
trying
# to create new flags.
#mail_max_flag_length = 50

# Save mails with CR+LF instead of plain LF. This makes sending those 
mails
# take less CPU, especially with sendfile() syscall with Linux and 
FreeBSD.
# But it also creates a bit more disk I/O which may just make it 
slower.
#mail_save_crlf = no

# Use mmap() instead of read() to read mail files. read() seems to be 
a bit
# faster with my Linux/x86 and it's better with NFS, so that's the 
default.
#mail_read_mmaped = no

# By default LIST command returns all entries in maildir beginning 
with dot.
# Enabling this option makes Dovecot return only entries which are 
directories.
# This is done by stat()ing each entry, so it causes more disk I/O.
# (For systems setting struct dirent->d_type, this check is free and 
it's
# done always regardless of this setting)
#maildir_stat_dirs = no

# Copy mail to another folders using hard links. This is much faster 
than
# actually copying the file. This is problematic only if something 
modifies
# the mail in one folder but doesn't want it modified in the others. 
I don't
# know any MUA which would modify mail files directly. IMAP protocol 
also
# requires that the mails don't change, so it would be problematic in 
any case.
# If you care about performance, enable it.
#maildir_copy_with_hardlinks = no

# Check if mails' content has been changed by external programs. This 
slows
# down things as extra stat() needs to be called for each file. If 
changes are
# noticed, the message is treated as a new message, since IMAP 
protocol
# specifies that existing messages are immutable.
#maildir_check_content_changes = no

# Which locking methods to use for locking mbox. There's three 
available:
#  dotlock: Create <mailbox>.lock file. This is the oldest and most 
NFS-safe
#           solution. If you want to use /var/mail/ like directory, 
the users
#           will need write access to that directory.
#  fcntl  : Use this if possible. Works with NFS too if lockd is 
used.
#  flock  : May not exist in all systems. Doesn't work with NFS.
#
# You can use both fcntl and flock too; if you do the order they're 
declared
# with is important to avoid deadlocks if other MTAs/MUAs are using 
both fcntl
# and flock. Some operating systems don't allow using both of them
# simultaneously, eg. BSDs. If dotlock is used, it's always created 
first.
mbox_locks = fcntl

# Should we create dotlock file even when we want only a read-lock? 
Setting
# this to yes hurts the performance when the mailbox is accessed 
simultaneously
# by multiple processes, but it's needed for reliable reading if no 
other
# locking methods are available.
#mbox_read_dotlock = no

# Maximum time in seconds to wait for lock (all of them) before 
aborting.
#mbox_lock_timeout = 300

# If dotlock exists but the mailbox isn't modified in any way, 
override the
# lock file after this many seconds.
#mbox_dotlock_change_timeout = 30

# umask to use for mail files and directories
#umask = 0077

# Drop all privileges before exec()ing the mail process. This is 
mostly
# meant for debugging, otherwise you don't get core dumps. Note that 
setting
# this to yes means that log file is opened as the logged in user, 
which
# might not work. It could also be a small security risk if you use 
single UID
# for multiple users, as the users could ptrace() each others 
processes then.
#mail_drop_priv_before_exec = no

##
## IMAP process
##

# Executable location
#imap_executable = /usr/libexec/dovecot/imap

# Set max. process size in megabytes. Most of the memory goes to 
mmap()ing
# files, so it shouldn't harm much even if this limit is set pretty 
high.
#imap_process_size = 256

# Support for dynamically loadable modules.
#imap_use_modules = no
#imap_modules = /usr/lib/dovecot/imap

##
## POP3 process
##

# Executable location
#pop3_executable = /usr/libexec/dovecot/pop3

# Set max. process size in megabytes. Most of the memory goes to 
mmap()ing
# files, so it shouldn't harm much even if this limit is set pretty 
high.
#pop3_process_size = 256

# Support for dynamically loadable modules.
#pop3_use_modules = no
#pop3_modules = /usr/lib/dovecot/pop3

##
## Authentication processes
##

# An Authentication process is a child process used by Dovecot that
# handles the authentication steps. The steps cover an authentication
# mechanism (auth_mechanisms, how the client authenticates in the 
IMAP or
# POP3 protocol), which password database should be queried 
(auth_passdb),
# and which user database should be queried (auth_userdb, to obtain
# UID, GID, and location of the user's mailbox/home directory).
#
# You can have multiple processes, though a typical configuration 
will
# have only one. Each time "auth = xx" is seen, a new process
# definition is started. The point of multiple processes is to be 
able
# to set stricter permissions. (See auth_user below.)
#
# Just remember that only one Authentication process is asked for the
# password, so you can't have different passwords accessible through
# different process definitions (unless they have different
# auth_mechanisms, and you're ok with having different password for
# each mechanisms).

# Authentication process name.
auth = default

# Specifies how the client authenticates in the IMAP protocol.
# Space separated list of permitted authentication mechanisms:
#   anonymous plain digest-md5 cram-md5
#
# anonymous - No authentication required.
# plain - The password is sent as plain text. All IMAP/POP3 clients
#  support this, and the password can be encrypted by Dovecot to 
match
#  any of the encryption schemes used in password databases.
# digest-md5 and cram-md5 - both encrypt the password so it is more
#  secure in transit, but are not well supported by clients, and
#  require that the password database use a matching encryption
#  scheme (or be in plaintext).
#
# See auth.txt for more details.
#
# If you are using SSL there is less benefit to digest-md5 and
# cram-md5 as the communication is already encrypted.
auth_mechanisms = plain

# Space separated list of realms for SASL authentication mechanisms 
that need
# them. You can leave it empty if you don't want to support multiple 
realms.
# Many clients simply use the first one listed here, so keep the 
default realm
# first.
#auth_realms =

# Default realm/domain to use if none was specified. This is used for 
both
# SASL realms and appending @domain to username in plaintext logins.
#auth_default_realm = 

# User database specifies where mails are located and what user/group 
IDs
# own them. For single-UID configuration use "static".
# http://wiki.dovecot.org/Authentication
# http://wiki.dovecot.org/VirtualUsers
#   passwd: /etc/passwd or similiar, using getpwnam()
#   passwd-file <path>: passwd-like file with specified location
#   static uid=<uid> gid=<gid> home=<dir template>: static settings
#   vpopmail: vpopmail library
#   ldap <config path>: LDAP, see doc/dovecot-ldap.conf
#   pgsql <config path>: a PostgreSQL database, see doc/dovecot-
pgsql.conf
auth_userdb = passwd

# Password database specifies only the passwords for users.
# http://wiki.dovecot.org/Authentication
#   passwd: /etc/passwd or similiar, using getpwnam()
#   shadow: /etc/shadow or similiar, using getspnam()
#   pam [<service> | *]: PAM authentication
#   passwd-file <path>: passwd-like file with specified location
#   vpopmail: vpopmail authentication
#   ldap <config path>: LDAP, see doc/dovecot-ldap.conf
#   pgsql <config path>: a PostgreSQL database, see doc/dovecot-
pgsql.conf
auth_passdb = pam

#auth_executable = /usr/libexec/dovecot/dovecot-auth

# Set max. process size in megabytes.
#auth_process_size = 256

# User to use for the process. This user needs access to only user 
and
# password databases, nothing else. Only shadow and pam 
authentication
# requires roots, so use something else if possible. Note that passwd
# authentication with BSDs internally accesses shadow files, which 
also
# requires roots. Note that this user is NOT used to access mails.
# That user is specified by auth_userdb above.
#auth_user = root

# Directory where to chroot the process. Most authentication backends 
don't
# work if this is set, and there's no point chrooting if auth_user is 
root.
#auth_chroot = 

# Number of authentication processes to create
#auth_count = 1

# List of allowed characters in username. If the user-given username 
contains
# a character not listed in here, the login automatically fails. This 
is just
# an extra check to make sure user can't exploit any potential quote 
escaping
# vulnerabilities with SQL/LDAP databases. If you want to allow all 
characters,
# set this value to empty.
#auth_username_chars = 
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@

# Username to use for users logging in with ANONYMOUS SASL mechanism
#auth_anonymous_username = anonymous

# More verbose logging. Useful for figuring out why authentication 
isn't
# working.
#auth_verbose = no
auth_verbose = yes

# Even more verbose logging for debugging purposes. Shows for example 
SQL
# queries.
#auth_debug = no
auth_debug = yes

# digest-md5 authentication process. It requires special MD5 
passwords which
# /etc/shadow and PAM doesn't support, so we never need roots to 
handle it.
# Note that the passwd-file is opened before chrooting and dropping 
root
# privileges, so it may be 0600-root owned file.

#auth = digest_md5
#auth_mechanisms = digest-md5
#auth_realms = 
#auth_userdb = passwd-file /etc/passwd.imap
#auth_passdb = passwd-file /etc/passwd.imap
#auth_user = imapauth
#auth_chroot = 

# if you plan to use only passwd-file, you don't need the two auth 
processes,
# simply set "auth_methods = plain digest-md5"


>On 5/2/05, Knute Johnson <knute@xxxxxxxxxxx> wrote:
>> Yes.
>> 
>> knute...
>> 
>> 
>> >On 5/2/05, Knute Johnson <knute@xxxxxxxxxxx> wrote:
>> >> I'm trying to get dovecot's pop3s to work with my Pegasus Mail
>> >> STARTLS.  I think I configured dovecot correctly but I get the
>> >> following message in the maillog.  I must not have something
>> >> correct with SSL but I haven't a clue as to what.  Any
>> >> suggestions?
>> >>
>> >> May 1 17:14:25 ljr-2 pop3-login: SSL_accept() syscall failed: EOF
>> >> [::ffff:208.1.40.46]
>> >>
>> >> Thanks,
>
>
>Can you paster ur dovecot.conf over here.
>
>
>Ankush
>
>-- 
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>
>

-- 
Knute Johnson
Molon Labe...