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smtp Transaction Time

Questions regarding the Mail Server
Dovecot, Exim, RoundCube
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jancas
Posts: 8
Joined: Wed Feb 05, 2014 2:46 pm

smtp Transaction Time
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Post by jancas » Thu Feb 20, 2014 11:30 am

Hi,

I tested mail sever on mxtoolbox and I get two warnings:

6.178 seconds - Warning on Connection time
8.767 seconds - Not good! on Transaction Time

Is this due to a Exim configuration?

Thank you.
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ken
Posts: 15
Joined: Fri Feb 28, 2014 5:20 am

Re: smtp Transaction Time
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Post by ken » Wed Mar 05, 2014 2:14 am

jancas wrote:Hi,

I tested mail sever on mxtoolbox and I get two warnings:

6.178 seconds - Warning on Connection time
8.767 seconds - Not good! on Transaction Time

Is this due to a Exim configuration?

Thank you.
Not sure if you got your answer yet but this but this is normal. It's doing an SMTP callback which is an anti-spam technique used to verify spammers return addresses that are most likely forged. This delay is set as a throttle so spammers don't bog out your system.

You can read more about it here; http://en.wikipedia.org/wiki/Anti-spam_ ... rification

Here is the setting:

Code: Select all

# cat /etc/exim/exim.conf | grep query_timeout
rfc1413_query_timeout = 5s
It can be changed to 0s if you want to disable it but unless it's really effecting your quality of service this setting should be fine and is an Exim default which you can read more about here: http://www.exim.org/exim-html-current/d ... _file.html
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jancas
Posts: 8
Joined: Wed Feb 05, 2014 2:46 pm

Re: smtp Transaction Time
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Post by jancas » Wed Mar 05, 2014 10:28 am

ken wrote:
jancas wrote:Hi,

I tested mail sever on mxtoolbox and I get two warnings:

6.178 seconds - Warning on Connection time
8.767 seconds - Not good! on Transaction Time

Is this due to a Exim configuration?

Thank you.
Not sure if you got your answer yet but this but this is normal. It's doing an SMTP callback which is an anti-spam technique used to verify spammers return addresses that are most likely forged. This delay is set as a throttle so spammers don't bog out your system.

You can read more about it here; http://en.wikipedia.org/wiki/Anti-spam_ ... rification

Here is the setting:

Code: Select all

# cat /etc/exim/exim.conf | grep query_timeout
rfc1413_query_timeout = 5s
It can be changed to 0s if you want to disable it but unless it's really effecting your quality of service this setting should be fine and is an Exim default which you can read more about here: http://www.exim.org/exim-html-current/d ... _file.html
Ok, thank you very much!
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