Why does email bounce?

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this is the sample sender email:[email address removed]

error line saying...

[email address removed]>> unable to connect to 207.168.10.12" sample IP Add.

[email address removed] is the recipient

I have had a bounceback with an error not listed on your page:

:
207.99.47.95 does not like recipient.
Remote host said: 550 5.1.1 : Recipient address rejected: User unknown in relay recipient table
Giving up on 207.99.47.95.

does this mean that the email address i am trying to send to doesn't exist?

thanks

Alex

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Hash: SHA1

That's what I would assume

Leo

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mr leo, need help!

this is the sample sender email:[email address removed]

error line saying...

[email address removed]>> unable to connect to 207.168.10.12" sample IP Add.

[email address removed] is the recipient

thanks!

erik

why my email bounce?i thought everything was ok but suddenly i received it again but not all my emails bounced.pls.help!!the noticed enclosed was message expired for domain at blah...blah..blah..but the one i send email told me that everything is still very good on his part..why all this happen?

I have a user getting a bounceback on an email address he uses quite frequently. Suddenly he can't email this guy. Others in my organization can email him, but this guy cannot. He gets a bounce back that the user is unknown. But the user is known since it works for other. Tried using the webmail account for this user and still get the bounce back.

Hi Leo. I'm trying to set my qmail server so it gives me 550 error page when there is no such a user. I'm using virtual manager to manage virtual domains. I have only one domain and every time I'm trying to send message to non existing user qmail-verify accepting anything. I reckon that the problem in .qmail-default which pipes to /usr/local/bin/vdeliver. If I remove .qmail-default from /home/email/[virtual_domain]/ folder email stops working.
Do you know what I need to change in /home/email/[virtual_domain]/.qmail-default in order 550 error works properly?

Thanks in advance,
yuriy

Hi Leo, I badly need your help, i have a failed emai delivery, and this is what it say:

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

[email edited]
SMTP error from remote mail server after end of data:
host mailgate.cybercity.dk [IP edited]: 550 5.7.1 message content rejected

------ This is a copy of the message, including all the headers. ------

people send me e-mails, I receive them, but the sender gets a "550 not delivered, mailbox unknown"-type message. I sent a message saying "Test" to myself and same thing - got original message and ALSO the message saying it was bounced back. Thanks in advance for any help.

I have got following message when I am trying to send mail to [Email address removed]. . I am sure that the email Id is in exist and internal mail from bankofindia.com (MMS) are gettting but external mails are not receiving.

Hi. This is the qmail-send program at yahoo.com.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.

[Email address removed].
203.199.104.69 does not like recipient.
Remote host said: 550 5.1.1 User unknown
Giving up on 203.199.104.69.

--- Below this line is a copy of the message.

Return-Path: [Email address removed].
Received: (qmail 81659 invoked by uid 60001); 13 Jun 2008 07:34:18 -0000
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws;
s=s1024; d=yahoo.com;
h=Received:X-Mailer:Date:From:Reply-To:Subject:To:Cc:MIME-Version:Content-Type:Message-ID;

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