That's very good to hear, Chandran.
On 7/28/2015 4:00 AM, Chandran Manikandan wrote:
> Dear Eric,
> I have changed configuration as you advised and monitored couple of
> days . It was working fine now. Thanks a lot friends.
>
> On Fri, Jul 24, 2015 at 6:36 PM, Chandran Manikandan
> <[email protected] <mailto:[email protected]>> wrote:
>
> Dear Eric,
> Thanks for your assist me. I have done your correction in
> local.conf and checked doveconf -n. It's shown the new settings.
> Let me track this issue another few more days. If still face the
> same issue then will update. If it's fixed also will update you.
> Thanks a lot Eric.
>
> On Fri, Jul 24, 2015 at 11:49 AM, Eric Broch
> <[email protected] <mailto:[email protected]>> wrote:
>
> Chandran,
>
> Use 'doveconf -n' (NOT 'doveconf -d') which will show all the
> settings with NON-DEFAULT values.
>
> Dovecot operates off of the configuration files. You do NOT,
> or most likely shouldn't, have to reinstall Dovecot.
>
> I'll bet that when you run 'doveconf -n' you'll most likely
> see the current setting from local.conf.
>
> Eric
>
>
>
>
> On 7/23/2015 9:14 PM, Chandran Manikandan wrote:
>> Dear Eric,
>> Thanks for your help. I tried your above advise and changed
>> in local.conf file then i restarted the service dovecot
>> restart. After restart the server i tried this command
>> doveconf -d still service count shows 1. FYR below.
>>
>> service imap-login {
>> chroot = login
>> client_limit = 0
>> drop_priv_before_exec = no
>> executable = imap-login
>> extra_groups =
>> group =
>> idle_kill = 0
>> inet_listener imap {
>> address =
>> port = 143
>> reuse_port = no
>> ssl = no
>> }
>> inet_listener imaps {
>> address =
>> port = 993
>> reuse_port = no
>> ssl = yes
>> }
>> privileged_group =
>> process_limit = 0
>> process_min_avail = 0
>> protocol = imap
>> service_count = 1
>> type = login
>> user = $default_login_user
>> vsz_limit = 18446744073709551615 B
>> }
>>
>> My changes in local.conf.
>>
>> service imap-login {
>> service_count = 0
>> #client_limit = $default_client_limit
>> #process_min_avail = 0
>> #vsz_limit = 64M
>> }
>> service pop3-login {
>> service_count = 0
>> }
>>
>> My 10-master.conf under conf.d file below.
>>
>> service imap-login {
>> inet_listener imap {
>> # process_limit = 15
>> # client_limit = 10740
>> #port = 143
>> }
>> inet_listener imaps {
>> #port = 993
>> #ssl = yes
>> }
>>
>> # Number of connections to handle before starting a new
>> process. Typically
>> # the only useful values are 0 (unlimited) or 1. 1 is more
>> secure, but 0
>> # is faster. <doc/wiki/LoginProcess.txt>
>> #service_count = 1
>>
>> # Number of processes to always keep waiting for more
>> connections.
>> #process_min_avail = 0
>>
>> # If you set service_count=0, you probably need to grow this.
>> #vsz_limit = $default_vsz_limit
>> }
>>
>> service pop3-login {
>> inet_listener pop3 {
>> #port = 110
>> }
>> inet_listener pop3s {
>> #port = 995
>> #ssl = yes
>> }
>> }
>>
>>
>> I think the problem is whatever change did in dovecot folder
>> means local.conf or toaster.conf or 10-master.conf it's not
>> overwrite in doveconf file that's why i couldn't fix this issue.
>>
>> Is any mismatch configuration there in dovecot package or
>> qmailtoaster.
>>
>> Or do i reinstall the current dovecot toaster package will it
>> fix this issue.
>>
>> Please advise it and help me.
>>
>> If i need to do reinstall kindly let me know the command
>> procedures. Because this is live server and would not affect
>> any email accounts or data.
>>
>> Please help me to resolve this issue.
>>
>> On Thu, Jul 23, 2015 at 7:45 PM, Eric Broch
>> <[email protected] <mailto:[email protected]>> wrote:
>>
>> Chandran,
>>
>> From the configuration you sent you have the following
>> setting...
>>
>> service imap-login {
>> .
>> .
>> .
>> service_count = 1
>> .
>> .
>> .
>> }
>>
>> from http://wiki2.dovecot.org/LoginProcess
>>
>> It should be...
>>
>> service imap-login {
>> service_count = 0
>> }
>>
>> For High-performance mode.
>>
>> And, I would not change any configuration file in
>> /etc/dovecot/conf.d directory, make all your changes in
>> local.conf
>>
>> In the above link, here's the High-Performance section:
>>
>>
>> High-performance mode
>>
>> You can enable high-performance mode with:
>>
>> service imap-login {
>> service_count = 0
>> #client_limit = $default_client_limit
>> #process_min_avail = 0
>> #vsz_limit = 64M
>> }
>> service pop3-login {
>> service_count = 0
>> }
>>
>> It works by using a number of long running login
>> processes, each handling a number of connections. This
>> loses much of the security benefits of the login process
>> design, because in case of a security hole (in Dovecot or
>> SSL library) the attacker is now able to see other users
>> logging in and steal their passwords, read their mails, etc.
>>
>> *
>>
>> process_min_avail should be set to be at least the
>> number of CPU cores in the system, so that all of
>> them will be used.
>>
>> * Otherwise new processes are created only once an
>> existing one's connection count reaches client_limit
>> * Default client_limit * process_limit = 1000*100 =
>> 100k connections
>> * vsz_limit should be increased to avoid out of memory
>> errors, especially if you're using SSL/TLS.
>>
>>
>>
>> Eric
>>
>>
>>
>> On 7/23/2015 1:01 AM, Chandran Manikandan wrote:
>>> Dear Eric,
>>> Please find the attached file FYR . please check and
>>> help me to resolve it.
>>>
>>> On Wed, Jul 22, 2015 at 8:21 PM, Eric Broch
>>> <[email protected]
>>> <mailto:[email protected]>> wrote:
>>>
>>>
>>> Look here http://wiki2.dovecot.org/LoginProcess
>>>
>>>
>>> On 7/22/2015 3:56 AM, Chandran Manikandan wrote:
>>>> Dear Friends,
>>>> I have faced below issues since two weeks to till
>>>> now. Could anyone help me to rectify this issue.
>>>>
>>>> Below message retrieve from logs and getting
>>>> disconnection from Outlook and other email clients.
>>>>
>>>> Error Message
>>>>
>>>> master: Warning: service(imap-login): process_limit
>>>> (100) reached, client connections are being dropped
>>>>
>>>> My local.conf from dovecot folder
>>>>
>>>> protocol imap {
>>>> imap_client_workarounds = "delay-newmail"
>>>> mail_max_userip_connections = 20
>>>> default_process_limit = 300
>>>> }
>>>>
>>>> 10-master.conf
>>>>
>>>> default_process_limit = 300
>>>> default_client_limit = 1000
>>>>
>>>> service imap-login {
>>>> inet_listener imap {
>>>> # process_limit = 15
>>>> # client_limit = 300
>>>> #port = 143
>>>> }
>>>> protocol imap {"process_limit = 300"}
>>>>
>>>> Please check above config. I have modified in
>>>> dovecot folder but doesn't reflect the server. Is
>>>> there anything in toaster issue. could any one help
>>>> me to solve it.
>>>>
>>>> My server toaster is dovecot-2.2.7-0.qt.el6.i686
>>>> Server is Centos 6.6
>>>>
>>>>
>>>>
>>>> --
>>>> *Thanks,*
>>>> *Manikandan.C*
>>>> *System Administrator*
>>>
>>>
>>>
>>>
>>> --
>>> *Thanks,*
>>> *Manikandan.C*
>>> *System Administrator*
>>>
>>>
>>>
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>>
>>
>>
>>
>> --
>> *Thanks,*
>> *Manikandan.C*
>> *System Administrator*
>
>
>
>
> --
> *Thanks,*
> *Manikandan.C*
> *System Administrator*
>
>
>
>
> --
> *Thanks,*
> *Manikandan.C*
> *System Administrator*
