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Old 10-18-2009, 10:55 AM   #1
uiuiui172
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Question Postfix can't send or recieve mail!


I am running Ubuntu 9.04 with dovecot and postfix and i have free service with www.dyndns.org and i would like to keep it free. My dyndns hostname is http://thebob.dyndns.ws and i can telnet it from localhost, internal ip
external ip, and internet hostname. I can telnet all mail ports. My ISP (comcast) does not block port 25. I can't email locally ( within my system) and i can't send or recieve email from other servers (like google). How do i get a mail.thebob.dyndns.ws domain? Why can't I send or recieve email? Please help me!!!!
 
Old 10-18-2009, 11:20 AM   #2
AlucardZero
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Why can't you send mail? What's the error message?

Code:
alucard@karrde:~$ telnet thebob.dyndns.ws 25
Trying 67.189.63.35...
Connected to thebob.dyndns.ws.
Escape character is '^]'.
HELO karrde.kiserai.net
There's something on port 25, but it's not acting like a mail server. What's the output of (as root)
Code:
netstat -anp | grep :25
 
Old 10-18-2009, 04:30 PM   #3
uiuiui172
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tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN 9618/master
tcp 73 0 192.168.1.100:25 67.189.63.35:32849 CLOSE_WAIT -
tcp 28 0 192.168.1.100:25 207.192.69.151:49202 CLOSE_WAIT -
tcp 83 0 127.0.0.1:25 127.0.0.1:47036 CLOSE_WAIT -
tcp 19 0 192.168.1.100:25 207.192.69.151:49201 CLOSE_WAIT -
 
Old 10-18-2009, 04:40 PM   #4
AlucardZero
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Ok, Postfix is listening.
 
Old 10-18-2009, 05:27 PM   #5
uiuiui172
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so... what do i do?
 
Old 10-18-2009, 05:42 PM   #6
AlucardZero
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Why can't you send mail? What's the error message?
 
Old 10-18-2009, 09:02 PM   #7
uiuiui172
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ok i reinstalled postfix so now i can send email locally but not to comcast or other places.

here is the error code:

host mx2a.comcast.net[76.96.30.116] refused to talk to me: 554 IMTA24.emeryville.ca.mail.comcast.net comcast 67.189.63.35 Comcast blocked. Please see http://help.comcast.net/content/faq/ES000001
 
Old 10-18-2009, 09:36 PM   #8
AlucardZero
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As a Comcast residential customer, you can't send mail directly. Instead, use Comcast's SMTP server to send mail.

In main.cf:
Code:
relayhost = smtp.comcast.net
 
Old 10-18-2009, 10:44 PM   #9
uiuiui172
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then i get this:

<tboltswimmerbob@comcast.net>: host smtp.comcast.net[76.96.30.117] said: 550
5.1.0 <dylan@dylanserver> sender rejected : invalid sender domain (in reply
to MAIL FROM command)
 
Old 10-19-2009, 07:39 AM   #10
AlucardZero
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As it says, "dylanserver" is invalid.
 
Old 10-19-2009, 01:11 PM   #11
uiuiui172
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how do i change it to a valid one?
 
Old 10-19-2009, 01:37 PM   #12
AlucardZero
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Read the manual / google / etc. I'm happy to help, but not handhold. You've got to learn how to do it yourself.
 
Old 11-05-2009, 12:54 AM   #13
AnthonyP
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I have to say, that was the most polite I've ever seen a hand off go.
Very nice
 
Old 09-07-2011, 11:36 PM   #14
jima2
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Here's a solution which worked for me:

http: //ubuntuforums.org/showpost.php?p=11229481&postcount=4

P.S. Rudeness seems to be pandemic...
 
  


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