[qmailtoaster] Re: Slowness in smtp

[Eric Shubert]

Is sounds as though there is something amiss in your djbdns configuration.

If you really want to use djbdns for some reason, I've found "The Linux 
Cookbook" by Carla Schroeder to be a good reference for that. I don't 
presently have my copy nearby.


I've found that it's much easier to use the caching-nameserver package 
if you're using CentOS. Simply remove the djbdns package, then install 
caching-nameserver:

# rpm -e djbdns
# yum install caching-nameserver

I expect that will fix things up for you.

--
-Eric 'shubes'


Poh Yong Hwang wrote:

Hi,

I tried the following on the mail server itself and i got the reply 
immediately.


[r...@mail init.d]# nslookup 122.175.72.62
Server: 127.0.0.1
Address:127.0.0.1#53

Non-authoritative answer:
62.72.175.122.in-addr.arpa  name = 
Telemedia-AP-dynamic-062.72.175.122.airtelbroadband.in 
.


Authoritative answers can be found from:

It seems that i have djbdns install rather than BIND for my 
qmailtoaster. Can i check how can i configure the forwarders on my 
caching server? The mail server setup is by default according to the 
Qmailtoaster installation guide.


Thanks
YongSan


On Mon, Jul 12, 2010 at 2:02 PM, Andreas Galatis > wrote:


Hi YongSan,

I tested to connect to your server on port 25.

It takes about 2-3 min to get the greeting-banner ("220
localhost.localdomainhe
- Welcome to Qmail Toaster Ver. 1.3 SMTP Server ESMTP")

For me that looks like your server takes ages to resolve my senders
reverse
dns.
Did you configure the forwarders on your caching dns server on
localhost?
How long does it take to resolve f.ex.  122.175.72.62 ?

Some times ago I had the same behaviour on a clients qmail-box where the
config. of bind disallowed querys from localhost (127.0.0.1).

Andreas

Am Montag, 12. Juli 2010 05:29:44 schrieb Poh Yong Hwang:
 > Hi,
 >
 > It should not be my windows as i have ask many people to
try(around 10) and
 > all face the same issue with slowness in smtp. I have remove the
default
 > zen.spamhaues on the blacklist file and it is still slow..
 >
 > YongSan
 >
 > On Mon, Jul 12, 2010 at 11:06 AM, South Computers
 >
 > mailto:i...@southcomputers.com>>wrote:
 > > For a quick test to see if it's your dns at the windoze box,
try adding
 > > your toaster to the hosts file. Typically win boxes check the
hosts file
 > > before dns.
 > >
 > > Also, check the blacklists on your toaster. You may have a slow
dnsbl in
 > > there.
 > >
 > > Poh Yong Hwang wrote:
 > >> Hi,
 > >>
 > >> Here is my resolv.conf :
 > >>
 > >> search mail.popular.com.sg 

 > >>
 > >> nameserver 127.0.0.1
 > >> nameserver 165.21.83.88
 > >> nameserver 165.21.100.88
 > >>
 > >> The slowness occurs on the time that the message took to leave
Outlook
 > >> outbound queue. If we do a email dossier check at
centralops.net  <
 > >> http://centralops.net>, it always get timeout while connecting
to our
 > >> mail server. One of the domain i have in this mail server is
 > >> mail.popular.com.sg 

 > >>
 > >> Please advise.
 > >>
 > >> Thanks
 > >>
 > >> YongSan
 > >>
 > >>
 > >> On Mon, Jul 12, 2010 at 3:54 AM, Eric Shubert mailto:e...@shubes.net>  >> e...@shubes.net >> wrote:
 > >>
 > >>DNS is often the culprit with sluggish performance, so
Andreas is
 > >>right.
 > >>
 > >>Outlook doesn't usually exhibit slowness. Because it has
its own
 > >>Outbound queue, it appears to the user that the message has
been
 > >>sent before the submission/smtp server is even contacted.
 > >>
 > >>I'd like to know where you're seeing the slowness. Are you
 > >>counting the time it takes for the message to reach its
 > >>destination? The time it takes to leave Outlook's Outbound
queue?
 > >>
 > >>What messages are you seeing in the send queue that
correspond to
 > >>the slow message(s)?
 > >># qmlog send
 > >>It's possible that the message is being requeued due to
 > >>graylisting by the recipient's server.
 > >>
 > >>There are many possibilities.
 > >>
 > >>-- -Eric 'shubes'
 > >>
 > >>
 > >>Andreas Galatis wrote:
 > >>
 > >>Hi Yongsan,
 > >>
 > >>I think 1st thing to lookup is dns-lookup speed of your
server.
 > >>Do you have a cahing-nameserver installed? What are your
 > >>settings in resolve.conf?
 > >>
 > >>How is your conn

Re: [qmailtoaster] Re: Slowness in smtp

[Jake Vickers]

On 07/12/2010 02:48 AM, Poh Yong Hwang wrote:

Hi,

It seems that if i use port 587 it does not have the slowness issue..

[r...@cp root]# time telnet mail.popular.com.sg 
  25

Trying 117.120.3.103...
Connected to mail.popular.com.sg  
(117.120.3.103).

Escape character is '^]'.
220 localhost.localdomain - Welcome to Qmail Toaster Ver. 1.3 SMTP 
Server ESMTP

quit
221 localhost.localdomain - Welcome to Qmail Toaster Ver. 1.3 SMTP Server
Connection closed by foreign host.

real2m14.788s
user0m0.000s
sys 0m0.000s
[r...@cp root]# time telnet mail.popular.com.sg 
  587

Trying 117.120.3.103...
Connected to mail.popular.com.sg  
(117.120.3.103).

Escape character is '^]'.
220 localhost.localdomain - Welcome to Qmail Toaster Ver. 1.3 SMTP 
Server ESMTP

quit
221 localhost.localdomain - Welcome to Qmail Toaster Ver. 1.3 SMTP Server
Connection closed by foreign host.

real0m5.913s
user0m0.000s
sys 0m0.010s
[r...@cp root]#

Could it still be DNS issue since the slowness does not show up in 
port 587?


Port 587 skips the blacklists check, so the 
/var/qmail/control/blacklists file is not processed.
Do your clients use port 25 or 587? If they're using port 25, change 
them to 587 but you will still need to fix your blacklists to lower the 
time before mails are allowed to be received.
And we still have not seen any log files, so this is like installing a 
network card in the dark.

Re: [qmailtoaster] Re: Slowness in smtp

[Tonix (Antonio Nati)]

It looks like you have problems solving your local name (the name of 
server where tcpserver is running).


Check your local name in DNS, and add "-l name" to your tcpserver 
command line.


Tonino

Poh Yong Hwang ha scritto:

Hi,

Here is my resolv.conf :

search mail.popular.com.sg 
nameserver 127.0.0.1
nameserver 165.21.83.88
nameserver 165.21.100.88

The slowness occurs on the time that the message took to leave Outlook 
outbound queue. If we do a email dossier check at centralops.net 
, it always get timeout while connecting to our 
mail server. One of the domain i have in this mail server is 
mail.popular.com.sg 


Please advise.

Thanks

YongSan

On Mon, Jul 12, 2010 at 3:54 AM, Eric Shubert > wrote:


DNS is often the culprit with sluggish performance, so Andreas is
right.

Outlook doesn't usually exhibit slowness. Because it has its own
Outbound queue, it appears to the user that the message has been
sent before the submission/smtp server is even contacted.

I'd like to know where you're seeing the slowness. Are you
counting the time it takes for the message to reach its
destination? The time it takes to leave Outlook's Outbound queue?

What messages are you seeing in the send queue that correspond to
the slow message(s)?
# qmlog send
It's possible that the message is being requeued due to
graylisting by the recipient's server.

There are many possibilities.

-- 
-Eric 'shubes'



Andreas Galatis wrote:

Hi Yongsan,

I think 1st thing to lookup is dns-lookup speed of your server.
Do you have a cahing-nameserver installed? What are your
settings in resolve.conf?

How is your connection to the internet (static, dynamic ip)

Bye

Andreas
Am Sonntag, 11. Juli 2010 13:32:36
schrieb Poh Yong Hwang:

Hi all,

I have setup qmailtoaster and have an issue with sending
out emails.
Whenever I tried to send out emails, it gets very slow.
Takes around 5
mins to send out an email using outlook.

Please advise how should I troubleshoot this.

Thanks.
Yongsan


---




-
Qmailtoaster is sponsored by Vickers Consulting Group
(www.vickersconsulting.com )
  Vickers Consulting Group offers Qmailtoaster support and
installations.
If you need professional help with your setup, contact them today!

-
   Please visit qmailtoaster.com  for the
latest news, updates, and packages.
To unsubscribe, e-mail:
qmailtoaster-list-unsubscr...@qmailtoaster.com

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--

   in...@zioniInterazioni di Antonio Nati 
  http://www.interazioni.it  to...@interazioni.it   

Re: [qmailtoaster] Re: Slowness in smtp

[Poh Yong Hwang]

Hi,

It seems that if i use port 587 it does not have the slowness issue..

[r...@cp root]# time telnet mail.popular.com.sg  25
Trying 117.120.3.103...
Connected to mail.popular.com.sg (117.120.3.103).
Escape character is '^]'.
220 localhost.localdomain - Welcome to Qmail Toaster Ver. 1.3 SMTP Server
ESMTP
quit
221 localhost.localdomain - Welcome to Qmail Toaster Ver. 1.3 SMTP Server
Connection closed by foreign host.

real2m14.788s
user0m0.000s
sys 0m0.000s
[r...@cp root]# time telnet mail.popular.com.sg  587
Trying 117.120.3.103...
Connected to mail.popular.com.sg (117.120.3.103).
Escape character is '^]'.
220 localhost.localdomain - Welcome to Qmail Toaster Ver. 1.3 SMTP Server
ESMTP
quit
221 localhost.localdomain - Welcome to Qmail Toaster Ver. 1.3 SMTP Server
Connection closed by foreign host.

real0m5.913s
user0m0.000s
sys 0m0.010s
[r...@cp root]#

Could it still be DNS issue since the slowness does not show up in port 587?

Thanks
YongSan



On Mon, Jul 12, 2010 at 2:32 PM, Jake Vickers  wrote:

>  On 07/12/2010 02:24 AM, Poh Yong Hwang wrote:
>
> Hi,
>
> I tried the following on the mail server itself and i got the reply
> immediately.
>
> [r...@mail init.d]# nslookup 122.175.72.62
> Server: 127.0.0.1
> Address:127.0.0.1#53
>
> Non-authoritative answer:
> 62.72.175.122.in-addr.arpa  name =
> Telemedia-AP-dynamic-062.72.175.122.airtelbroadband.in.
>
> Authoritative answers can be found from:
>
> It seems that i have djbdns install rather than BIND for my qmailtoaster.
> Can i check how can i configure the forwarders on my caching server? The
> mail server setup is by default according to the Qmailtoaster installation
> guide.
>
> Thanks
> YongSan
>
>
> On Mon, Jul 12, 2010 at 2:02 PM, Andreas Galatis  wrote:
>
>> Hi YongSan,
>>
>> I tested to connect to your server on port 25.
>>
>> It takes about 2-3 min to get the greeting-banner ("220
>> localhost.localdomainhe
>> - Welcome to Qmail Toaster Ver. 1.3 SMTP Server ESMTP")
>>
>
> You have a DNS lookup problem. When I tried to telnet to your SMTP port, it
> took 1 minute and 42 seconds to connect:
>
> [j...@jake-lapbox ~]$ time telnet mail.popular.com.sg 25
> Trying 117.120.3.103...
> Connected to mail.popular.com.sg.
> Escape character is '^]'.
> 220 localhost.localdomain - Welcome to Qmail Toaster Ver. 1.3 SMTP Server
> ESMTP
> quit
> 221 localhost.localdomain - Welcome to Qmail Toaster Ver. 1.3 SMTP Server
> Connection closed by foreign host.
>
> real1m42.329s
> user0m0.001s
> sys0m0.006s
>
>
> I entered "quit" within 1-2 seconds of receiving your banner.
> What is the contents of your /var/qmail/control/blacklists file? Are you
> using spamdyke? What does your tcp.smtp file look like?
> What is being logged in your smtp log file?
>
>

Re: [qmailtoaster] Re: Slowness in smtp

[Jake Vickers]

On 07/12/2010 02:24 AM, Poh Yong Hwang wrote:

Hi,

I tried the following on the mail server itself and i got the reply 
immediately.


[r...@mail init.d]# nslookup 122.175.72.62
Server: 127.0.0.1
Address:127.0.0.1#53

Non-authoritative answer:
62.72.175.122.in-addr.arpa  name = 
Telemedia-AP-dynamic-062.72.175.122.airtelbroadband.in 
.


Authoritative answers can be found from:

It seems that i have djbdns install rather than BIND for my 
qmailtoaster. Can i check how can i configure the forwarders on my 
caching server? The mail server setup is by default according to the 
Qmailtoaster installation guide.


Thanks
YongSan


On Mon, Jul 12, 2010 at 2:02 PM, Andreas Galatis > wrote:


Hi YongSan,

I tested to connect to your server on port 25.

It takes about 2-3 min to get the greeting-banner ("220
localhost.localdomainhe
- Welcome to Qmail Toaster Ver. 1.3 SMTP Server ESMTP")



You have a DNS lookup problem. When I tried to telnet to your SMTP port, 
it took 1 minute and 42 seconds to connect:


[j...@jake-lapbox ~]$ time telnet mail.popular.com.sg 25
Trying 117.120.3.103...
Connected to mail.popular.com.sg.
Escape character is '^]'.
220 localhost.localdomain - Welcome to Qmail Toaster Ver. 1.3 SMTP 
Server ESMTP

quit
221 localhost.localdomain - Welcome to Qmail Toaster Ver. 1.3 SMTP Server
Connection closed by foreign host.

real1m42.329s
user0m0.001s
sys0m0.006s


I entered "quit" within 1-2 seconds of receiving your banner.
What is the contents of your /var/qmail/control/blacklists file? Are you 
using spamdyke? What does your tcp.smtp file look like?

What is being logged in your smtp log file?

Re: [qmailtoaster] Re: Slowness in smtp

[Poh Yong Hwang]

Hi,

I tried the following on the mail server itself and i got the reply
immediately.

[r...@mail init.d]# nslookup 122.175.72.62
Server: 127.0.0.1
Address:127.0.0.1#53

Non-authoritative answer:
62.72.175.122.in-addr.arpa  name =
Telemedia-AP-dynamic-062.72.175.122.airtelbroadband.in.

Authoritative answers can be found from:

It seems that i have djbdns install rather than BIND for my qmailtoaster.
Can i check how can i configure the forwarders on my caching server? The
mail server setup is by default according to the Qmailtoaster installation
guide.

Thanks
YongSan


On Mon, Jul 12, 2010 at 2:02 PM, Andreas Galatis  wrote:

> Hi YongSan,
>
> I tested to connect to your server on port 25.
>
> It takes about 2-3 min to get the greeting-banner ("220
> localhost.localdomainhe
> - Welcome to Qmail Toaster Ver. 1.3 SMTP Server ESMTP")
>
> For me that looks like your server takes ages to resolve my senders reverse
> dns.
> Did you configure the forwarders on your caching dns server on localhost?
> How long does it take to resolve f.ex.  122.175.72.62 ?
>
> Some times ago I had the same behaviour on a clients qmail-box where the
> config. of bind disallowed querys from localhost (127.0.0.1).
>
> Andreas
>
> Am Montag, 12. Juli 2010 05:29:44 schrieb Poh Yong Hwang:
> > Hi,
> >
> > It should not be my windows as i have ask many people to try(around 10)
> and
> > all face the same issue with slowness in smtp. I have remove the default
> > zen.spamhaues on the blacklist file and it is still slow..
> >
> > YongSan
> >
> > On Mon, Jul 12, 2010 at 11:06 AM, South Computers
> >
> > wrote:
> > > For a quick test to see if it's your dns at the windoze box, try adding
> > > your toaster to the hosts file. Typically win boxes check the hosts
> file
> > > before dns.
> > >
> > > Also, check the blacklists on your toaster. You may have a slow dnsbl
> in
> > > there.
> > >
> > > Poh Yong Hwang wrote:
> > >> Hi,
> > >>
> > >> Here is my resolv.conf :
> > >>
> > >> search mail.popular.com.sg 
> > >>
> > >> nameserver 127.0.0.1
> > >> nameserver 165.21.83.88
> > >> nameserver 165.21.100.88
> > >>
> > >> The slowness occurs on the time that the message took to leave Outlook
> > >> outbound queue. If we do a email dossier check at centralops.net <
> > >> http://centralops.net>, it always get timeout while connecting to our
> > >> mail server. One of the domain i have in this mail server is
> > >> mail.popular.com.sg 
> > >>
> > >> Please advise.
> > >>
> > >> Thanks
> > >>
> > >> YongSan
> > >>
> > >>
> > >> On Mon, Jul 12, 2010 at 3:54 AM, Eric Shubert  > >> e...@shubes.net>> wrote:
> > >>
> > >>DNS is often the culprit with sluggish performance, so Andreas is
> > >>right.
> > >>
> > >>Outlook doesn't usually exhibit slowness. Because it has its own
> > >>Outbound queue, it appears to the user that the message has been
> > >>sent before the submission/smtp server is even contacted.
> > >>
> > >>I'd like to know where you're seeing the slowness. Are you
> > >>counting the time it takes for the message to reach its
> > >>destination? The time it takes to leave Outlook's Outbound queue?
> > >>
> > >>What messages are you seeing in the send queue that correspond to
> > >>the slow message(s)?
> > >># qmlog send
> > >>It's possible that the message is being requeued due to
> > >>graylisting by the recipient's server.
> > >>
> > >>There are many possibilities.
> > >>
> > >>-- -Eric 'shubes'
> > >>
> > >>
> > >>Andreas Galatis wrote:
> > >>
> > >>Hi Yongsan,
> > >>
> > >>I think 1st thing to lookup is dns-lookup speed of your server.
> > >>Do you have a cahing-nameserver installed? What are your
> > >>settings in resolve.conf?
> > >>
> > >>How is your connection to the internet (static, dynamic ip)
> > >>
> > >>Bye
> > >>
> > >>Andreas
> > >>Am Sonntag, 11. Juli 2010 13:32:36
> > >>schrieb Poh Yong Hwang:
> > >>
> > >>Hi all,
> > >>
> > >>I have setup qmailtoaster and have an issue with sending
> > >>out emails.
> > >>Whenever I tried to send out emails, it gets very slow.
> > >>Takes around 5
> > >>mins to send out an email using outlook.
> > >>
> > >>Please advise how should I troubleshoot this.
> > >>
> > >>Thanks.
> > >>Yongsan
> > >>
> > >>
> > >>
> > >>
> 
> > >>---
> > >>
> > >>
> > >>
> > >>
> > >>
> > >>
> 
> > >>- Qmailtoaster is sponsored by Vickers Consulting Group
> > >>(www.vickersconsulting.com )
> > >>
> > >>  Vickers Consulting Group offers Qmailtoaster support and
> > >>installations.
> > >>If you ne

Re: [qmailtoaster] Re: Slowness in smtp

[Andreas Galatis]

Hi YongSan,

I tested to connect to your server on port 25.

It takes about 2-3 min to get the greeting-banner ("220 localhost.localdomain 
- Welcome to Qmail Toaster Ver. 1.3 SMTP Server ESMTP")

For me that looks like your server takes ages to resolve my senders reverse 
dns.
Did you configure the forwarders on your caching dns server on localhost?
How long does it take to resolve f.ex.  122.175.72.62 ?

Some times ago I had the same behaviour on a clients qmail-box where the 
config. of bind disallowed querys from localhost (127.0.0.1).

Andreas

Am Montag, 12. Juli 2010 05:29:44 schrieb Poh Yong Hwang:
> Hi,
> 
> It should not be my windows as i have ask many people to try(around 10) and
> all face the same issue with slowness in smtp. I have remove the default
> zen.spamhaues on the blacklist file and it is still slow..
> 
> YongSan
> 
> On Mon, Jul 12, 2010 at 11:06 AM, South Computers
> 
> wrote:
> > For a quick test to see if it's your dns at the windoze box, try adding
> > your toaster to the hosts file. Typically win boxes check the hosts file
> > before dns.
> >
> > Also, check the blacklists on your toaster. You may have a slow dnsbl in
> > there.
> >
> > Poh Yong Hwang wrote:
> >> Hi,
> >>
> >> Here is my resolv.conf :
> >>
> >> search mail.popular.com.sg 
> >>
> >> nameserver 127.0.0.1
> >> nameserver 165.21.83.88
> >> nameserver 165.21.100.88
> >>
> >> The slowness occurs on the time that the message took to leave Outlook
> >> outbound queue. If we do a email dossier check at centralops.net <
> >> http://centralops.net>, it always get timeout while connecting to our
> >> mail server. One of the domain i have in this mail server is
> >> mail.popular.com.sg 
> >>
> >> Please advise.
> >>
> >> Thanks
> >>
> >> YongSan
> >>
> >>
> >> On Mon, Jul 12, 2010 at 3:54 AM, Eric Shubert  >> e...@shubes.net>> wrote:
> >>
> >>DNS is often the culprit with sluggish performance, so Andreas is
> >>right.
> >>
> >>Outlook doesn't usually exhibit slowness. Because it has its own
> >>Outbound queue, it appears to the user that the message has been
> >>sent before the submission/smtp server is even contacted.
> >>
> >>I'd like to know where you're seeing the slowness. Are you
> >>counting the time it takes for the message to reach its
> >>destination? The time it takes to leave Outlook's Outbound queue?
> >>
> >>What messages are you seeing in the send queue that correspond to
> >>the slow message(s)?
> >># qmlog send
> >>It's possible that the message is being requeued due to
> >>graylisting by the recipient's server.
> >>
> >>There are many possibilities.
> >>
> >>-- -Eric 'shubes'
> >>
> >>
> >>Andreas Galatis wrote:
> >>
> >>Hi Yongsan,
> >>
> >>I think 1st thing to lookup is dns-lookup speed of your server.
> >>Do you have a cahing-nameserver installed? What are your
> >>settings in resolve.conf?
> >>
> >>How is your connection to the internet (static, dynamic ip)
> >>
> >>Bye
> >>
> >>Andreas
> >>Am Sonntag, 11. Juli 2010 13:32:36
> >>schrieb Poh Yong Hwang:
> >>
> >>Hi all,
> >>
> >>I have setup qmailtoaster and have an issue with sending
> >>out emails.
> >>Whenever I tried to send out emails, it gets very slow.
> >>Takes around 5
> >>mins to send out an email using outlook.
> >>
> >>Please advise how should I troubleshoot this.
> >>
> >>Thanks.
> >>Yongsan
> >>
> >>
> >> 
> >> 
> >>---
> >>
> >>
> >>
> >>
> >> 
> >> 
> >>- Qmailtoaster is sponsored by Vickers Consulting Group
> >>(www.vickersconsulting.com )
> >>
> >>  Vickers Consulting Group offers Qmailtoaster support and
> >>installations.
> >>If you need professional help with your setup, contact them
> >> today!
> >>
> >> 
> >> 
> >>- Please visit qmailtoaster.com  for the
> >>
> >>latest news, updates, and packages.
> >>To unsubscribe, e-mail:
> >>qmailtoaster-list-unsubscr...@qmailtoaster.com
> >>
> >>
> >>   For additional commands, e-mail:
> >>qmailtoaster-list-h...@qmailtoaster.com
> >>
> >
> > -
> > Qmailtoaster is sponsored by Vickers Consulting Group (
> > www.vickersconsulting.com)
> >   Vickers Consulting Group offers Qmailtoaster support and installations.
> > If you need professional help with your setup, contact 

Re: [qmailtoaster] Re: Slowness in smtp

[Poh Yong Hwang]

Hi,

It should not be my windows as i have ask many people to try(around 10) and
all face the same issue with slowness in smtp. I have remove the default
zen.spamhaues on the blacklist file and it is still slow..

YongSan

On Mon, Jul 12, 2010 at 11:06 AM, South Computers
wrote:

> For a quick test to see if it's your dns at the windoze box, try adding
> your toaster to the hosts file. Typically win boxes check the hosts file
> before dns.
>
> Also, check the blacklists on your toaster. You may have a slow dnsbl in
> there.
>
>
>
> Poh Yong Hwang wrote:
>
>> Hi,
>>
>> Here is my resolv.conf :
>>
>> search mail.popular.com.sg 
>>
>> nameserver 127.0.0.1
>> nameserver 165.21.83.88
>> nameserver 165.21.100.88
>>
>> The slowness occurs on the time that the message took to leave Outlook
>> outbound queue. If we do a email dossier check at centralops.net <
>> http://centralops.net>, it always get timeout while connecting to our
>> mail server. One of the domain i have in this mail server is
>> mail.popular.com.sg 
>>
>> Please advise.
>>
>> Thanks
>>
>> YongSan
>>
>>
>> On Mon, Jul 12, 2010 at 3:54 AM, Eric Shubert > e...@shubes.net>> wrote:
>>
>>DNS is often the culprit with sluggish performance, so Andreas is
>>right.
>>
>>Outlook doesn't usually exhibit slowness. Because it has its own
>>Outbound queue, it appears to the user that the message has been
>>sent before the submission/smtp server is even contacted.
>>
>>I'd like to know where you're seeing the slowness. Are you
>>counting the time it takes for the message to reach its
>>destination? The time it takes to leave Outlook's Outbound queue?
>>
>>What messages are you seeing in the send queue that correspond to
>>the slow message(s)?
>># qmlog send
>>It's possible that the message is being requeued due to
>>graylisting by the recipient's server.
>>
>>There are many possibilities.
>>
>>-- -Eric 'shubes'
>>
>>
>>Andreas Galatis wrote:
>>
>>Hi Yongsan,
>>
>>I think 1st thing to lookup is dns-lookup speed of your server.
>>Do you have a cahing-nameserver installed? What are your
>>settings in resolve.conf?
>>
>>How is your connection to the internet (static, dynamic ip)
>>
>>Bye
>>
>>Andreas
>>Am Sonntag, 11. Juli 2010 13:32:36
>>schrieb Poh Yong Hwang:
>>
>>Hi all,
>>
>>I have setup qmailtoaster and have an issue with sending
>>out emails.
>>Whenever I tried to send out emails, it gets very slow.
>>Takes around 5
>>mins to send out an email using outlook.
>>
>>Please advise how should I troubleshoot this.
>>
>>Thanks.
>>Yongsan
>>
>>
>>  ---
>>
>>
>>
>>
>>  
>> -
>>Qmailtoaster is sponsored by Vickers Consulting Group
>>(www.vickersconsulting.com )
>>
>>  Vickers Consulting Group offers Qmailtoaster support and
>>installations.
>>If you need professional help with your setup, contact them today!
>>
>>  
>> -
>>   Please visit qmailtoaster.com  for the
>>
>>latest news, updates, and packages.
>>To unsubscribe, e-mail:
>>qmailtoaster-list-unsubscr...@qmailtoaster.com
>>
>>
>>   For additional commands, e-mail:
>>qmailtoaster-list-h...@qmailtoaster.com
>>
>>
>>
>>
>>
>
>
> -
> Qmailtoaster is sponsored by Vickers Consulting Group (
> www.vickersconsulting.com)
>   Vickers Consulting Group offers Qmailtoaster support and installations.
> If you need professional help with your setup, contact them today!
>
> -
>Please visit qmailtoaster.com for the latest news, updates, and
> packages.
> To unsubscribe, e-mail:
> qmailtoaster-list-unsubscr...@qmailtoaster.com
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>
>
>

Re: [qmailtoaster] Re: Slowness in smtp

[South Computers]

For a quick test to see if it's your dns at the windoze box, try adding 
your toaster to the hosts file. Typically win boxes check the hosts file 
before dns.


Also, check the blacklists on your toaster. You may have a slow dnsbl in 
there.




Poh Yong Hwang wrote:

Hi,

Here is my resolv.conf :

search mail.popular.com.sg 
nameserver 127.0.0.1
nameserver 165.21.83.88
nameserver 165.21.100.88

The slowness occurs on the time that the message took to leave Outlook 
outbound queue. If we do a email dossier check at centralops.net 
, it always get timeout while connecting to our 
mail server. One of the domain i have in this mail server is 
mail.popular.com.sg 


Please advise.

Thanks

YongSan

On Mon, Jul 12, 2010 at 3:54 AM, Eric Shubert > wrote:


DNS is often the culprit with sluggish performance, so Andreas is
right.

Outlook doesn't usually exhibit slowness. Because it has its own
Outbound queue, it appears to the user that the message has been
sent before the submission/smtp server is even contacted.

I'd like to know where you're seeing the slowness. Are you
counting the time it takes for the message to reach its
destination? The time it takes to leave Outlook's Outbound queue?

What messages are you seeing in the send queue that correspond to
the slow message(s)?
# qmlog send
It's possible that the message is being requeued due to
graylisting by the recipient's server.

There are many possibilities.

-- 
-Eric 'shubes'



Andreas Galatis wrote:

Hi Yongsan,

I think 1st thing to lookup is dns-lookup speed of your server.
Do you have a cahing-nameserver installed? What are your
settings in resolve.conf?

How is your connection to the internet (static, dynamic ip)

Bye

Andreas
Am Sonntag, 11. Juli 2010 13:32:36
schrieb Poh Yong Hwang:

Hi all,

I have setup qmailtoaster and have an issue with sending
out emails.
Whenever I tried to send out emails, it gets very slow.
Takes around 5
mins to send out an email using outlook.

Please advise how should I troubleshoot this.

Thanks.
Yongsan


---




-
Qmailtoaster is sponsored by Vickers Consulting Group
(www.vickersconsulting.com )
  Vickers Consulting Group offers Qmailtoaster support and
installations.
If you need professional help with your setup, contact them today!

-
   Please visit qmailtoaster.com  for the
latest news, updates, and packages.
To unsubscribe, e-mail:
qmailtoaster-list-unsubscr...@qmailtoaster.com

   For additional commands, e-mail:
qmailtoaster-list-h...@qmailtoaster.com







-
Qmailtoaster is sponsored by Vickers Consulting Group 
(www.vickersconsulting.com)
   Vickers Consulting Group offers Qmailtoaster support and installations.
 If you need professional help with your setup, contact them today!
-
Please visit qmailtoaster.com for the latest news, updates, and packages.

 To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com

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Re: [qmailtoaster] Re: Slowness in smtp

[Poh Yong Hwang]

Hi,

Here is my resolv.conf :

search mail.popular.com.sg
nameserver 127.0.0.1
nameserver 165.21.83.88
nameserver 165.21.100.88

The slowness occurs on the time that the message took to leave Outlook
outbound queue. If we do a email dossier check at centralops.net, it always
get timeout while connecting to our mail server. One of the domain i have in
this mail server is mail.popular.com.sg

Please advise.

Thanks

YongSan

On Mon, Jul 12, 2010 at 3:54 AM, Eric Shubert  wrote:

> DNS is often the culprit with sluggish performance, so Andreas is right.
>
> Outlook doesn't usually exhibit slowness. Because it has its own Outbound
> queue, it appears to the user that the message has been sent before the
> submission/smtp server is even contacted.
>
> I'd like to know where you're seeing the slowness. Are you counting the
> time it takes for the message to reach its destination? The time it takes to
> leave Outlook's Outbound queue?
>
> What messages are you seeing in the send queue that correspond to the slow
> message(s)?
> # qmlog send
> It's possible that the message is being requeued due to graylisting by the
> recipient's server.
>
> There are many possibilities.
>
> --
> -Eric 'shubes'
>
>
> Andreas Galatis wrote:
>
>> Hi Yongsan,
>>
>> I think 1st thing to lookup is dns-lookup speed of your server.
>> Do you have a cahing-nameserver installed? What are your settings in
>> resolve.conf?
>>
>> How is your connection to the internet (static, dynamic ip)
>>
>> Bye
>>
>> Andreas
>> Am Sonntag, 11. Juli 2010 13:32:36
>> schrieb Poh Yong Hwang:
>>
>>> Hi all,
>>>
>>> I have setup qmailtoaster and have an issue with sending out emails.
>>> Whenever I tried to send out emails, it gets very slow. Takes around 5
>>> mins to send out an email using outlook.
>>>
>>> Please advise how should I troubleshoot this.
>>>
>>> Thanks.
>>> Yongsan
>>>
>>>
>>> ---
>>>
>>
>
>
> -
> Qmailtoaster is sponsored by Vickers Consulting Group (
> www.vickersconsulting.com)
>   Vickers Consulting Group offers Qmailtoaster support and installations.
> If you need professional help with your setup, contact them today!
>
> -
>Please visit qmailtoaster.com for the latest news, updates, and
> packages.
> To unsubscribe, e-mail:
> qmailtoaster-list-unsubscr...@qmailtoaster.com
>For additional commands, e-mail:
> qmailtoaster-list-h...@qmailtoaster.com
>
>
>

[qmailtoaster] Re: Slowness in smtp

[Eric Shubert]

DNS is often the culprit with sluggish performance, so Andreas is right.

Outlook doesn't usually exhibit slowness. Because it has its own 
Outbound queue, it appears to the user that the message has been sent 
before the submission/smtp server is even contacted.


I'd like to know where you're seeing the slowness. Are you counting the 
time it takes for the message to reach its destination? The time it 
takes to leave Outlook's Outbound queue?


What messages are you seeing in the send queue that correspond to the 
slow message(s)?

# qmlog send
It's possible that the message is being requeued due to graylisting by 
the recipient's server.


There are many possibilities.

--
-Eric 'shubes'

Andreas Galatis wrote:

Hi Yongsan,

I think 1st thing to lookup is dns-lookup speed of your server.
Do you have a cahing-nameserver installed? What are your settings in 
resolve.conf?


How is your connection to the internet (static, dynamic ip)

Bye

Andreas
Am Sonntag, 11. Juli 2010 13:32:36
schrieb Poh Yong Hwang:

Hi all,

I have setup qmailtoaster and have an issue with sending out emails.
Whenever I tried to send out emails, it gets very slow. Takes around 5
mins to send out an email using outlook.

Please advise how should I troubleshoot this.

Thanks.
Yongsan

---



-
Qmailtoaster is sponsored by Vickers Consulting Group 
(www.vickersconsulting.com)
   Vickers Consulting Group offers Qmailtoaster support and installations.
 If you need professional help with your setup, contact them today!
-
Please visit qmailtoaster.com for the latest news, updates, and packages.

 To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com

For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com