Can anyone, who has used both Postfix & Exim please share some experience with me? Which of these 2 did you prefer to use, and why?
cPanel uses Exim (and AFAIK, only Exim), VirtualMin seems to use Postfix by default and often times when a custom server is installed a client doesn't know which to use so we recommend Exim. But, what are the differences between these 2, from your experience, if you don't mind telling me?
I have used Qmail on FreeBSD 4.8 last and don't even consider this as a good mail system anymore, so I'm not even looking at it right now.
Rudi Ahlers wrote:
Can anyone, who has used both Postfix & Exim please share some experience with me? Which of these 2 did you prefer to use, and why?
I have not used exim but I know someone who swears by it. It is highly configurable and had stuff like sender based routing before postfix did.
cPanel uses Exim (and AFAIK, only Exim), VirtualMin seems to use Postfix by default and often times when a custom server is installed a client doesn't know which to use so we recommend Exim. But, what are the differences between these 2, from your experience, if you don't mind telling me?
Exim is monolithic while postfix is not. Next up would be a comparison in feature sets (lookup table should be the same - mysql,pgsql,ldap,Berkerly DB) but is probably not worth it unless you want to do make some really intricate ruleset. The last would probably be the difference in behaviour and therefore in tuning. postfix being non-monolithic might mean that it has more room for fine-tuning than exim.
I have used Qmail on FreeBSD 4.8 last and don't even consider this as a good mail system anymore, so I'm not even looking at it right now.
qmail on FreeBSD 4.x? Man, FreeBSD 4.x is dog slow. I got a major performance boost just be moving from FreeBSD to Redhat Linux back in 2002/2003 on the same hardware. FreeBSD also only supports directory indexing to 1000 entries, anymore than that it will start walking through the tree. You do not ever want to build a queue on FreeBSD. Anyway, I would not consider using qmail for an mx but I would for an outgoing server after it has been patched for smtp-auth support.
The bottom line is, use whatever you are comfortable with or take the time to learn the mta's behaviours and features. It won't matter how much exim is better than postfix or vice-versa if you are not prepared to work with it.
Yahoo using postfix, and zimbra also use postfix as MTA. But exim is simple to configure.
I'm using zimbra as primary and postfix as secondary mx.
- ------------ Regards, David -- http://pnyet.web.id
-----Original Message----- From: Chan Chung Hang Christopher christopher.chan@bradbury.edu.hk Date: Tue, 09 Mar 2010 21:31:08 To: centos@centos.org Subject: Re: [CentOS] Exim VS Postfix (no flame wars please)
Rudi Ahlers wrote:
Can anyone, who has used both Postfix & Exim please share some experience with me? Which of these 2 did you prefer to use, and why?
I have not used exim but I know someone who swears by it. It is highly configurable and had stuff like sender based routing before postfix did.
cPanel uses Exim (and AFAIK, only Exim), VirtualMin seems to use Postfix by default and often times when a custom server is installed a client doesn't know which to use so we recommend Exim. But, what are the differences between these 2, from your experience, if you don't mind telling me?
Exim is monolithic while postfix is not. Next up would be a comparison in feature sets (lookup table should be the same - mysql,pgsql,ldap,Berkerly DB) but is probably not worth it unless you want to do make some really intricate ruleset. The last would probably be the difference in behaviour and therefore in tuning. postfix being non-monolithic might mean that it has more room for fine-tuning than exim.
I have used Qmail on FreeBSD 4.8 last and don't even consider this as a good mail system anymore, so I'm not even looking at it right now.
qmail on FreeBSD 4.x? Man, FreeBSD 4.x is dog slow. I got a major performance boost just be moving from FreeBSD to Redhat Linux back in 2002/2003 on the same hardware. FreeBSD also only supports directory indexing to 1000 entries, anymore than that it will start walking through the tree. You do not ever want to build a queue on FreeBSD. Anyway, I would not consider using qmail for an mx but I would for an outgoing server after it has been patched for smtp-auth support.
The bottom line is, use whatever you are comfortable with or take the time to learn the mta's behaviours and features. It won't matter how much exim is better than postfix or vice-versa if you are not prepared to work with it. _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
On Tuesday, March 09, 2010 11:03 PM, david@pnyet.web.id wrote:
Yahoo using postfix, and zimbra also use postfix as MTA. But exim is simple to configure.
And when did Yahoo switch from qmail to postfix? In fact, the headers still indicate that Yahoo is using their own modified version of qmail.
Chan Chung Hang Christopher wrote:
Rudi Ahlers wrote:
Can anyone, who has used both Postfix & Exim please share some experience with me? Which of these 2 did you prefer to use, and why?
I have not used exim but I know someone who swears by it. It is highly configurable and had stuff like sender based routing before postfix did.
cPanel uses Exim (and AFAIK, only Exim), VirtualMin seems to use Postfix by default and often times when a custom server is installed a client doesn't know which to use so we recommend Exim. But, what are the differences between these 2, from your experience, if you don't mind telling me?
Exim is monolithic while postfix is not. Next up would be a comparison in feature sets (lookup table should be the same - mysql,pgsql,ldap,Berkerly DB) but is probably not worth it unless you want to do make some really intricate ruleset. The last would probably be the difference in behaviour and therefore in tuning. postfix being non-monolithic might mean that it has more room for fine-tuning than exim.
I've never found it particularly necessary to tune exim, out of the box with a basic configuration it handles itself very well and scales nicely even up to heavy loads. I've used it in 100k+ e-mails a day environments without any stability or performance problems. It's a rather popular mail server in the UK, possibly by nature of it's origins at Cambridge.
I've not spent much time using postfix, but every time I have it's been relatively straightforward and intuitive as well. Always seems to perform well too :)
I rather feel its a bit of a case of 6 of one, half a dozen of the other. Both tackle the same problem from slightly different angles, and both have achieved excellence in their own ways.
There is a great introduction to configuring exim on this site: http://www.exim-new-users.co.uk
Paul
On Tue, Mar 9, 2010 at 5:57 PM, Paul Graydon paulgraydon@gmail.com wrote:
I've never found it particularly necessary to tune exim, out of the box with a basic configuration it handles itself very well and scales nicely even up to heavy loads. I've used it in 100k+ e-mails a day environments without any stability or performance problems. It's a rather popular mail server in the UK, possibly by nature of it's origins at Cambridge.
I've not spent much time using postfix, but every time I have it's been relatively straightforward and intuitive as well. Always seems to perform well too :)
I rather feel its a bit of a case of 6 of one, half a dozen of the other. Both tackle the same problem from slightly different angles, and both have achieved excellence in their own ways.
There is a great introduction to configuring exim on this site: http://www.exim-new-users.co.uk
Paul _______________________________________________
Thanx guys, this is as much as I thought :) There's no real benefit in choosing one over the other, but rather use what I know.
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Chan Chung Hang Christopher -
Christopher Chan
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david＠pnyet.web.id -
Paul Graydon -
Rudi Ahlers