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-   -   Postfix Slow Transaction Time (http://www.howtoforge.com/forums/showthread.php?t=59672)

necdettenekeci 23rd November 2012 08:56

Postfix Slow Transaction Time
 
Hi,

I have 2 servers nearly same. One has dovecot, other has courier. This is the only difference.

I installed them via ISP Config Debian tutorials.

Problem is: the one with dovecot runs perfect but the other one is really slow with smtp.

Here is MXTOOLBOX reports:

This server works fine:

220 ****.******.com ESMTP Postfix (Debian/GNU)
Test Result
SMTP Reverse Banner Check OK - 94.73.130.154 resolves to ****.******.com
SMTP Reverse DNS Mismatch OK - Reverse DNS matches SMTP Banner
SMTP TLS OK - Supports TLS.
SMTP Connection Time 0 seconds - Good on Connection time
SMTP Open Relay OK - Not an open relay.
SMTP Transaction Time 1.045 seconds - Good on Transaction Time
Session Transcript:
EHLO please-read-policy.mxtoolbox.com
250-****.******.com
250-PIPELINING
250-SIZE 104857600
250-VRFY
250-ETRN
250-STARTTLS
250-AUTH PLAIN LOGIN
250-AUTH=PLAIN LOGIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN [172 ms]
MAIL FROM: <supertool@mxtoolbox.com>
250 2.1.0 Ok [172 ms]
RCPT TO: <test@example.com>
554 5.7.1 <test@example.com>: Relay access denied [172 ms]
QUIT
221 2.0.0 Bye [172 ms]


This one is slow with smtp (no problem with pop3)

220 ****.******.com ESMTP Postfix (Debian/GNU)
Test Result Hide
SMTP Reverse Banner Check OK - 85.159.70.125 resolves to ****.******.com
SMTP Reverse DNS Mismatch OK - Reverse DNS matches SMTP Banner
SMTP TLS OK - Supports TLS.
SMTP Connection Time 0 seconds - Good on Connection time
SMTP Open Relay OK - Not an open relay.
SMTP Transaction Time 11.216 seconds - Not good! on Transaction Time Ignore
Session Transcript:
EHLO please-read-policy.mxtoolbox.com
250-****.******.com
250-PIPELINING
250-SIZE
250-VRFY
250-ETRN
250-STARTTLS
250-AUTH PLAIN LOGIN
250-AUTH=PLAIN LOGIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN [172 ms]
MAIL FROM: <supertool@mxtoolbox.com>
250 2.1.0 Ok [172 ms]
RCPT TO: <test@example.com>
554 5.7.1 <test@example.com>: Relay access denied [172 ms]
QUIT
221 2.0.0 Bye [172 ms]

I see 250-SIZE is empty on slow one.

What can the problem be?

Thanks for help.

till 23rd November 2012 09:08

Please check if the dns servers in /etc/resolv.conf are correct and reachable and that they are responding fast.

necdettenekeci 23rd November 2012 09:33

Thank you very much. It got dns from my kerio server. I changed them and everything works fine now.

Thanks again.


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