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  #1  
Old 28th July 2010, 01:15
pawan pawan is offline
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Default Please use the SMTP relay at your 550-5.7.1 service provider instead. Learn more

My question to all linux wizards.
I am though very new to linux, I was able to setup ISPCONFIG 3 on my ubuntu 10.04 64bit desktop.
Every thing in the server is running fine. All services are running fine as well.
The problem I am facing is
I am able to send mails from outside to my mail addresses configured in ISPCONFIG, but I am not able to send the mails to outside users. I am getting the error like

Code:
From: 	Mail Delivery System <MAILER-DAEMON@server1.mywebhostings.biz>
To: 	pkjoshi@orissaitbazar.com
Subject: 	Undelivered Mail Returned to Sender
Date: 	Wednesday 28 July 2010 02:54:00 IST

This is the mail system at host server1.mywebhostings.biz.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                   The mail system

<pkjoshi.sbp@gmail.com>: host gmail-smtp-in.l.google.com[74.125.127.27] said:
    550-5.7.1 [59.90.144.48] The IP you're using to send mail is not authorized
    to 550-5.7.1 send email directly to our servers. Please use the SMTP relay
    at your 550-5.7.1 service provider instead. Learn more at
    550 5.7.1 http://mail.google.com/support/bin/answer.py?answer=10336
    b21si2383474ana.176 (in reply to end of DATA command)
I did check the link given http://mail.google.com/support/bin/a...y?answer=10336

In this URL link it mentions that sending IP address does not match the sending domain.
I couldn't locate the problem except that the sender host is mentioned as server1.mywebhostings.biz and not orissaitbazar.com. could this be the problem.

Both the domains that host server1.mywebhsotings.biz and orissaitbazar are on same ip address.
Please note that I am using static ip and not dynamic ip.
I have looked everywhere to find the solution, but I couldnot find a solution.
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  #2  
Old 28th July 2010, 09:53
Mark_NL Mark_NL is offline
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Default

You're probably running this server on an ip address of your home isp (on cable, dsl or smth) .. in that case you don't have a proper reversed dns ..

Code:
mark@mark-desktop:~$ host 59.90.144.48
48.144.90.59.in-addr.arpa domain name pointer Static.Sambalpur.mp.59.90.144.48/24.bsnl.in.
Code:
mark@mark-desktop:~$ host server1.mywebhostings.biz
server1.mywebhostings.biz is an alias for mywebhostings.biz.
mywebhostings.biz has address 59.90.144.48
mywebhostings.biz mail is handled by 0 mywebhostings.biz.
server1.mywebhostings.biz returns 59.90.144.48
but 59.90.144.48 returns Static.Sambalpur.mp.59.90.144.48/24.bsnl.in.

since these two don't match, you get the error above.

so you need to do what they suggest in the return mail, use your ISP's mailserver as relay on your server, or use your ISP's mailserver to send out mails, and only receive on your own server.
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pawan (30th July 2010)
  #3  
Old 30th July 2010, 20:57
pawan pawan is offline
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Default Solved

Dear Mark_NL
Many many many thanks for having pointed out the real cause of mail rejection.

Initially I didn't agree mentally, what you mentioned, as I was able to sent outward mail even gmail using froxlor, but not all. Whereas from ispconfig no mail at all. why couldn't get an answer.

I googled about the importance of reverse DNS and PTR record.

I got it changed from my isp which will resolve to my server name and still my mail was getting rejected by hotmail for example stating spamhouse.

I placed a request for suppression of my ip from PBL list.

Now I am able to send mail to any mail provider like gmail, yahoo, rediffmail etc.

Thank you so much once again.
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  #4  
Old 30th July 2010, 22:19
Mark_NL Mark_NL is offline
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Default

hehe i'm glad you figured it out
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