Postfix Slow Transaction Time

Discussion in 'Installation/Configuration' started by necdettenekeci, Nov 23, 2012.

  1. necdettenekeci

    necdettenekeci New Member

    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.
     
  2. till

    till Super Moderator Howtoforge Staff HowtoForge Supporter ISPConfig Developer

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

    necdettenekeci New Member

    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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