LinuxQuestions.org
Share your knowledge at the LQ Wiki.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Software
User Name
Password
Linux - Software This forum is for Software issues.
Having a problem installing a new program? Want to know which application is best for the job? Post your question in this forum.

Notices


Reply
  Search this Thread
Old 06-22-2003, 04:07 AM   #1
axelyeung
LQ Newbie
 
Registered: Jun 2003
Location: Hong Kong
Distribution: Redhat
Posts: 3

Rep: Reputation: 0
Question qmail server with broadband problem


I build a qmail server under a ADSL broadband following the instruction in "Life with qmail".

I don't have a fix IP, so I use a no-ip host name so the server is "cleverchild.no-ip.org" and I create an account "test@cleverchild.no-ip.org".
I can receive mail from all the world and I can send mail to myself (test@cleverchild.no-ip.org send to test@cleverchild.no-ip.org)
but when I send mail to other host (e.g. hotmail.com, yahoo.com)using "cleverchild.no-ip.org", the mail stay in the queue forever and the log said "deferral: Sorry,_I_wasn't_able_to_establish_an_SMTP_connection._(#4.4.1)/"

I read the some post here and found somebody said most ISP have blocked the port 25.(do I correct?)
What should I do to make my qmail server able to send mail to other host?

Thank you very much for your support
 
Old 06-22-2003, 05:39 AM   #2
soob
Member
 
Registered: May 2003
Location: A country town, Australia
Distribution: Debian
Posts: 72

Rep: Reputation: 15
Hmm, is it common for ISPs to block outgoing SMTP? Mine doesn't.

You can make a quick check with telnet to see if sending to port 25 is blocked. First, find a mailserver: if you want to test against hotmail,

$ host -t mx hotmail.com

This gives a list of hotmail's servers for incoming SMTP. Pick any one... type this, don't forget 25 on the end:

$ telnet mx2.hotmail.com 25

I get the following (not blocked):

Trying 65.54.254.145...
Connected to mx2.hotmail.com.
220 mc2-f33.law16.hotmail.com Microsoft ESMTP MAIL Service,
.. etc etc

Then type quit, enter to exit.

If it just times out, or says something like "unreachable", try another mailserver or two... if they are all unreachable, odds are you have been firewalled somewhere.

If you are blocked, one solution would be to make qmail send everything outgoing via your ISP's mailserver. Look at smtproute in "man qmailremote".
 
Old 06-22-2003, 07:14 AM   #3
axelyeung
LQ Newbie
 
Registered: Jun 2003
Location: Hong Kong
Distribution: Redhat
Posts: 3

Original Poster
Rep: Reputation: 0
Thank you soob,

I have tried telnet-ing a few mail servers and all got time out, except my ISP's mail server. I think I got blocked.

I will take a look about smtproute, Thank you very much soob
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
Broadband & Setup Email Server redman_8888 Linux - Networking 5 06-02-2005 01:04 PM
Static IP and Web Server from cable Broadband cool_hussu Linux - Networking 2 04-16-2005 09:13 PM
Qmail (Qmail-pop3d) pop login problem Punker51 Linux - Software 2 07-22-2004 02:52 PM
qmail +qmail-qfilter + qmail-scanner-queue+qmail-user-masq.pl problem countcobolt Linux - Networking 0 07-08-2004 11:29 AM
Exim masquerading mail to AOL users with broadband SMTP server llamakc Linux - General 0 12-13-2003 08:58 AM


All times are GMT -5. The time now is 02:07 AM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration