nixCraft

I am using "Sendmail Server" with "squirrelmail webmail" service. This is my bulk mail server,having WAN IP Address & DNS Name Registration.

I am using "phplist" to execute Bulk mail messages through "mailing list" system.

I am able to send 100-200 messages at a time & all messages were sent successfully.

Now, the problem is :- I have made a mailing list,which contains approx 3000 Messages. Already i executed mails,but I am getting a common error message in my inbox.

The Message information is as given below.

The original message was received at Wed, 18 Mar 2009 17:56:17 +0530
from localhost.localdomain [127.0.0.1]

----- Transcript of session follows -----
451 startec.com: Name server timeout
Warning: message still undelivered after 4 hours
Will keep trying until message is 5 days old

Each & Every Message is having same words.So,it may possible that I need some modifications in my "sendmail server"

Also check below listed messages to get more information.

The original message was received at Wed, 18 Mar 2009 22:43:58 +0530
from localhost.localdomain [127.0.0.1]

----- The following addresses had permanent fatal errors -----
<rajivgupta@not.com>
(reason: 550-5.1.1 The email account that you tried to reach does not exist.
Please try)

----- Transcript of session follows -----
... while talking to aspmx.l.google.com.:
>>> DATA
<<< 550-5.1.1 The email account that you tried to reach does not exist. Please try
<<< 550-5.1.1 double-checking the recipient's email address for typos or
<<< 550-5.1.1 unnecessary spaces. Learn more at
<<< 550 5.1.1 'This Gmail user does not exist...' - Gmail Help 14si360927tim.29
550 5.1.1 <rajivgupta@not.com>... User unknown
<<< 503 5.5.1 RCPT first. 14si360927tim.29


Another Message.

The original message was received at Wed, 18 Mar 2009 16:50:21 +0530
from localhost.localdomain [127.0.0.1]

----- The following addresses had permanent fatal errors -----
<myprovidence@mindspring.com>
(reason: 550 550 Dynamic/zombied/spam IPs blocked. Write
blockedbyearthlink@abuse.earthlink.net)

----- Transcript of session follows -----
... while talking to mx3.mindspring.com.:
>>> MAIL From:<apache@newssocia.org> SIZE=2224
<<< 550 550 Dynamic/zombied/spam IPs blocked. Write
blockedbyearthlink@abuse.earthlink.net
554 5.0.0 Service unavailable


Please respond if anyone is having proper answer.

Waiting.

Your mails are getting blocked since your server has been listed in spam database. You cannot just send mails to people randomly without having an explicit consent.

The error message by Google shows that the email id which you trying to send does not exist. Where did you get the email list from...?

I agree with amitabh. Your email server is sending emails but most providers bouncing back because of:

1. SPAM
2. No user account

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Vivek Gite
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