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

    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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