Dear friends

I have some confusion about postfix performance, if I am an
ISP and
with 20,000 user's with postfix, Is postfix  is capable to
do this
pretty things. Has any one has experiance to working with
postfix in
heavy load

with redgs
rajnish


we have some discussion with Mr Alain Spineux

me: should we ask some ?
 Sent at 7:48 PM on Tuesday
 Alain: some what ?
 me: thnx
regarding postfix
i want to established a MTA with 20000 user's shoud i go
with postfix
 Alain: What else ? [nose smile]
 me: qmail
 Sent at 7:52 PM on Tuesday
 Alain: Qmail was probably a good peace of sofware in 2000
and before.
But it's no more developped since (I things)
 Sent at 7:54 PM on Tuesday
 Alain: postfix is actively maintained by Wietse and
actively
supported on the mailing list ! Very actively supported !
Postfix is also a good piece of software.
 me: that's good, would you think that postfix is capable to
bear load
of 20000 usre's with heavy load
 Sent at 7:57 PM on Tuesday
 Alain: Yes ! (But I dont have experience with so much
users).
 Sent at 7:59 PM on Tuesday
 Alain: You will probably use other component
"weaker" than postfix,
AV, imap server ... Or is it a SMTP relay only ?
 me: yes i am using kolab2 right now but only with 1500
usre's but it's too slow
 Sent at 8:01 PM on Tuesday
 Alain: But postfix is not the bottleneck, AV and SPAM
checking are
very CPU and IO consuming ! Then cyrus, if using IMAP is
probably
using more load than postfix !
 Sent at 8:04 PM on Tuesday
 Alain: Also kolabd can use some CPU when checking all LDAP
entry
(depending the kolab2, 2.0 or 2.1 ) also  lot of PHP script
are used
by postfix, in kolabfilter, policies, ...
 me: AS per i know kolab is not working in distributed
enviroment if
it works then still mails not send locally means directly
one server
to another. because kolab does't have fearure of mailHost
or you are right
yes you are right
 Sent at 8:08 PM on Tuesday
 me: if you don't mind could i send this query in
<kolab-userskolab.org>,
 Sent at 8:10 PM on Tuesday
 Alain: Kolab dont need distributed features in itself, all
kolab
component can be distributed on different server : postfix,
cyrus,
ldap, amavis can all be on a different server. You can have
multiple
instances of each of them . Also ldap and cyrus have some
replication
feature to help to distribute the load on multiple server
!(but
leaving a little more the kolab integration)
Yes publish the all discussion

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Kolab-userskolab.org
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If properly configured and on the correct hardware it should
be fine.  
Postfix is very scalable and most importantly reliable.

On 13 Nov 2007, at 14:45, rajnish krishna wrote:

> I have some confusion about postfix performance, if I
am an ISP and
> with 20,000 user's with postfix, Is postfix  is capable
to do this
> pretty things. Has any one has experiance to working
with postfix in
> heavy load
>
> with redgs
> rajnish
>
>
> we have some discussion with Mr Alain Spineux
>
> me: should we ask some ?
> Sent at 7:48 PM on Tuesday
> Alain: some what ?
> me: thnx
> regarding postfix
> i want to established a MTA with 20000 user's shoud i
go with postfix
> Alain: What else ? [nose smile]
> me: qmail
> Sent at 7:52 PM on Tuesday
> Alain: Qmail was probably a good peace of sofware in
2000 and before.
> But it's no more developped since (I things)
> Sent at 7:54 PM on Tuesday
> Alain: postfix is actively maintained by Wietse and
actively
> supported on the mailing list ! Very actively supported
!
> Postfix is also a good piece of software.
> me: that's good, would you think that postfix is
capable to bear load
> of 20000 usre's with heavy load
> Sent at 7:57 PM on Tuesday
> Alain: Yes ! (But I dont have experience with so much
users).
> Sent at 7:59 PM on Tuesday
> Alain: You will probably use other component
"weaker" than postfix,
> AV, imap server ... Or is it a SMTP relay only ?
> me: yes i am using kolab2 right now but only with 1500
usre's but  
> it's too slow
> Sent at 8:01 PM on Tuesday
> Alain: But postfix is not the bottleneck, AV and SPAM
checking are
> very CPU and IO consuming ! Then cyrus, if using IMAP
is probably
> using more load than postfix !
> Sent at 8:04 PM on Tuesday
> Alain: Also kolabd can use some CPU when checking all
LDAP entry
> (depending the kolab2, 2.0 or 2.1 ) also  lot of PHP
script are used
> by postfix, in kolabfilter, policies, ...
> me: AS per i know kolab is not working in distributed
enviroment if
> it works then still mails not send locally means
directly one server
> to another. because kolab does't have fearure of
mailHost
> or you are right
> yes you are right
> Sent at 8:08 PM on Tuesday
> me: if you don't mind could i send this query in
<kolab-userskolab.org 
> >,
> Sent at 8:10 PM on Tuesday
> Alain: Kolab dont need distributed features in itself,
all kolab
> component can be distributed on different server :
postfix, cyrus,
> ldap, amavis can all be on a different server. You can
have multiple
> instances of each of them . Also ldap and cyrus have
some replication
> feature to help to distribute the load on multiple
server !(but
> leaving a little more the kolab integration)
> Yes publish the all discussion
>
> _______________________________________________
> Kolab-users mailing list
> Kolab-userskolab.org
> https:
//kolab.org/mailman/listinfo/kolab-users

_______________________________________________
Kolab-users mailing list
Kolab-userskolab.org
https:
//kolab.org/mailman/listinfo/kolab-users

"rajnish krishna" <krishnarajnishguptagmail.com> writes:

> I have some confusion about postfix performance, if I
am an ISP and
> with 20,000 user's with postfix, Is postfix  is capable
to do this
> pretty things. Has any one has experiance to working
with postfix in
> heavy load

http://www.postfix.
org/press.html

http://www.l
inuxjournal.com/article/7323



>
> with redgs
> rajnish
>
>
> we have some discussion with Mr Alain Spineux
>
> me: should we ask some ?
>  Sent at 7:48 PM on Tuesday
>  Alain: some what ?
>  me: thnx
> regarding postfix
> i want to established a MTA with 20000 user's shoud i
go with postfix
>  Alain: What else ? [nose smile]
>  me: qmail
>  Sent at 7:52 PM on Tuesday
>  Alain: Qmail was probably a good peace of sofware in
2000 and before.
> But it's no more developped since (I things)
>  Sent at 7:54 PM on Tuesday
>  Alain: postfix is actively maintained by Wietse and
actively
> supported on the mailing list ! Very actively supported
!
> Postfix is also a good piece of software.
>  me: that's good, would you think that postfix is
capable to bear load
> of 20000 usre's with heavy load
>  Sent at 7:57 PM on Tuesday
>  Alain: Yes ! (But I dont have experience with so much
users).
>  Sent at 7:59 PM on Tuesday
>  Alain: You will probably use other component
"weaker" than postfix,
> AV, imap server ... Or is it a SMTP relay only ?
>  me: yes i am using kolab2 right now but only with 1500
usre's but it's too slow
>  Sent at 8:01 PM on Tuesday
>  Alain: But postfix is not the bottleneck, AV and SPAM
checking are
> very CPU and IO consuming ! Then cyrus, if using IMAP
is probably
> using more load than postfix !
>  Sent at 8:04 PM on Tuesday
>  Alain: Also kolabd can use some CPU when checking all
LDAP entry
> (depending the kolab2, 2.0 or 2.1 ) also  lot of PHP
script are used
> by postfix, in kolabfilter, policies, ...
>  me: AS per i know kolab is not working in distributed
enviroment if
> it works then still mails not send locally means
directly one server
> to another. because kolab does't have fearure of
mailHost
> or you are right
> yes you are right
>  Sent at 8:08 PM on Tuesday
>  me: if you don't mind could i send this query in
<kolab-userskolab.org>,
>  Sent at 8:10 PM on Tuesday
>  Alain: Kolab dont need distributed features in itself,
all kolab
> component can be distributed on different server :
postfix, cyrus,
> ldap, amavis can all be on a different server. You can
have multiple
> instances of each of them . Also ldap and cyrus have
some replication
> feature to help to distribute the load on multiple
server !(but
> leaving a little more the kolab integration)
> Yes publish the all discussion
>
> _______________________________________________
> Kolab-users mailing list
> Kolab-userskolab.org
> https:
//kolab.org/mailman/listinfo/kolab-users

-- 
______ http://kdab.com
_______________ http://kolab-konsortium.c
om _

prdus Kolab work is funded in part by KDAB and the
Kolab Konsortium

____ http://www.pardus.de
_________________ http://gunnarwrobel.de _
E-mail : prdus.de                                 Dr. Gunnar
Wrobel
Tel.   : +49 40 432 72335                          
Bundesstrasse 29
Fax    : +49 40 432 70855                            D-20146
Hamburg
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~
   >> Mail at ease - Rent a kolab groupware server at
prdus <<                 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~

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Kolab-userskolab.org
https:
//kolab.org/mailman/listinfo/kolab-users

On November 13, 2007, rajnish krishna wrote:
> I have some confusion about postfix performance, if I
am an ISP and
> with 20,000 user's with postfix, Is postfix  is capable
to do this
> pretty things. Has any one has experiance to working
with postfix in
> heavy load
>
> with redgs
> rajnish
>
>


Personally I have experience under a heavy utilized system,
not quite that 
heavy a load, but it is certainly possible to do.   The
important factors 
would be the hardware, and network design.  There are so
many options 
depending on what you are doing ... again ... this is not a
problem in 
theory.


Andy

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Kolab-userskolab.org
https:
//kolab.org/mailman/listinfo/kolab-users

On Nov 13, 2007 3:45 PM, rajnish krishna
<krishnarajnishguptagmail.com> wrote:
> I have some confusion about postfix performance, if I
am an ISP and
> with 20,000 user's with postfix, Is postfix  is capable
to do this
> pretty things. Has any one has experiance to working
with postfix in
> heavy load
>
> with redgs
> rajnish

Why are you asking this question ?

Do you plan to replace postfix by qmail inside your kolab
server ?
If so you will spend lot of time for no performance gain.

Do you plan to install a separate SMTP relay ?
Here to postfix is probably the best solution.

Some time ago, I heard (I mean I read) people saying they
were handling
1 milions of emails a day with a postfix. I imaging it was
without any
mail filtering and no mail deliveries !
At that time I imaging it was a 2Ghz with 1 or 2Go.

I thing you will have concern about other components before
to worry
about postfix !

Ask the postfix guy on the postix list !


>
>
> we have some discussion with Mr Alain Spineux
>
> me: should we ask some ?
>  Sent at 7:48 PM on Tuesday
>  Alain: some what ?
>  me: thnx
> regarding postfix
> i want to established a MTA with 20000 user's shoud i
go with postfix
>  Alain: What else ? [nose smile]
>  me: qmail
>  Sent at 7:52 PM on Tuesday
>  Alain: Qmail was probably a good peace of sofware in
2000 and before.
> But it's no more developped since (I things)
>  Sent at 7:54 PM on Tuesday
>  Alain: postfix is actively maintained by Wietse and
actively
> supported on the mailing list ! Very actively supported
!
> Postfix is also a good piece of software.
>  me: that's good, would you think that postfix is
capable to bear load
> of 20000 usre's with heavy load
>  Sent at 7:57 PM on Tuesday
>  Alain: Yes ! (But I dont have experience with so much
users).
>  Sent at 7:59 PM on Tuesday
>  Alain: You will probably use other component
"weaker" than postfix,
> AV, imap server ... Or is it a SMTP relay only ?
>  me: yes i am using kolab2 right now but only with 1500
usre's but it's too slow
>  Sent at 8:01 PM on Tuesday
>  Alain: But postfix is not the bottleneck, AV and SPAM
checking are
> very CPU and IO consuming ! Then cyrus, if using IMAP
is probably
> using more load than postfix !
>  Sent at 8:04 PM on Tuesday
>  Alain: Also kolabd can use some CPU when checking all
LDAP entry
> (depending the kolab2, 2.0 or 2.1 ) also  lot of PHP
script are used
> by postfix, in kolabfilter, policies, ...
>  me: AS per i know kolab is not working in distributed
enviroment if
> it works then still mails not send locally means
directly one server
> to another. because kolab does't have fearure of
mailHost
> or you are right
> yes you are right
>  Sent at 8:08 PM on Tuesday
>  me: if you don't mind could i send this query in
<kolab-userskolab.org>,
>  Sent at 8:10 PM on Tuesday
>  Alain: Kolab dont need distributed features in itself,
all kolab
> component can be distributed on different server :
postfix, cyrus,
> ldap, amavis can all be on a different server. You can
have multiple
> instances of each of them . Also ldap and cyrus have
some replication
> feature to help to distribute the load on multiple
server !(but
> leaving a little more the kolab integration)
> Yes publish the all discussion
>
> _______________________________________________
> Kolab-users mailing list
> Kolab-userskolab.org
> https:
//kolab.org/mailman/listinfo/kolab-users
>



-- 
Alain Spineux
aspineux gmail com
May the sources be with you

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