Please whitelist cPanel in your adblocker so that you’re able to see our version release promotions, thanks!

The Community Forums

Interact with an entire community of cPanel & WHM users!

remote_smtp defer (-44): SMTP error from remote mailer

Discussion in 'E-mail Discussion' started by netlook, Dec 6, 2004.

  1. netlook

    netlook Well-Known Member
    PartnerNOC

    Joined:
    Mar 25, 2004
    Messages:
    335
    Likes Received:
    0
    Trophy Points:
    166
    Hello,

    I have a problem with sending mails from PHP script :

    delivering 1CbJTL-0005cd-Tn
    Connecting to mx.domain.com [123.123.123.123]:25 ... connected
    SMTP<< 220 mx.domain.com ESMTP Postfix
    SMTP>> EHLO hostname.com
    SMTP<< 250-mx.domain.com
    250-PIPELINING
    250-SIZE 30000000
    250-VRFY
    250-ETRN
    250 8BITMIME
    SMTP>> MAIL FROM:<nobody@hostname.com> SIZE=9847
    SMTP>> RCPT TO:<user@domain.com>
    SMTP>> DATA
    SMTP<< 250 Ok
    SMTP<< 450 Server configuration problem
    SMTP<< 554 Error: no valid recipients
    SMTP>> QUIT
    LOG: MAIN
    == user@domain.com R=lookuphost T=remote_smtp defer (-44): SMTP error from remote mailer after RCPT TO:<user@domain.com>: host mx.domain.com [123.123.123.123]: 450 Server configuration problem

    --

    Anybody had such problem before? Any idea? :confused:
     
  2. netlook

    netlook Well-Known Member
    PartnerNOC

    Joined:
    Mar 25, 2004
    Messages:
    335
    Likes Received:
    0
    Trophy Points:
    166
    I found the solutions - simply turn off SMTP Tweak in WHM/Security Setup.

    BTW - what for is SMTP Tweak and is it safely to turn it off? :cool:

    Thank you
     
  3. grgur

    grgur Member

    Joined:
    Sep 2, 2004
    Messages:
    8
    Likes Received:
    0
    Trophy Points:
    151
    Location:
    Split, Croatia
    Thanks, just saved me hours with this tip!
     
  4. amal

    amal Well-Known Member

    Joined:
    Nov 22, 2003
    Messages:
    155
    Likes Received:
    0
    Trophy Points:
    166
    Location:
    India
    cPanel Access Level:
    Root Administrator
    Well, I never had a problem with the SMTP tweak turned on.. What kind of error do you get on /var/log/exim_mainlog?

    SMTP tweak prevents certain kind of spam mails that could be sent from the server..It won't allow normal users to connect to remote SMTP servers.
     
Loading...

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice