As title,
one of my friend is trying to send me an email but he get this error.

The message WAS NOT relayed to:
  <MY EMAIL ADDRSS>: 127.0.0.1 said:
   550 5.6.0 Failed, id=24031-05, from MTA([127.0.0.1]:10025): 550 Content Rejected; Content Rejected

This nondelivery report was generated by the program amavisd-new at host
smtp-out06.email.it. Our internal reference code for your message is
24031-05/V+gNbqJDggEH

What's this error? How can I solve it?

The strange things is that I put his email address in the sender_access as ACCEPT.
Any idea?

Is "smtp-out06.email.it" your machine? That's the server that's rejecting the mail.

"Content Rejected" - means it's not the address that's the problem, it's the message itself

"amavisd-new" is anti-malware.

So smtp-out06 is rejecting the message possibly because it thinks there's a virus in it

_________________
Rgds
Stephen
(Linux user since kernel version 0.11)

no, email.it is the email provider of the person who is trying to send me the email.
thanks.

Then your client's email server is dropping your clients outbound email because it detects malware in the emails content.

It's all up to your client to fix the problem (i.e. delouse the workstation that is sending out malware).

_________________
Either provide enough details for people to help, or sit back and listen to the crickets chirp.
Security thru obscurity is a myth - and really really annoying.

ok, thanks.

<MY EMAIL ADDRESS>: host 127.0.0.1[127.0.0.1] said: 550 5.6.0
   Failed, id=31153-07, from MTA([127.0.0.1]:10025): 550 Content Rejected;
   Content Rejected (in reply to end of DATA command)

it seems that the server that is rejecting the email is mine.
why it rejects the email from email.it?

any idea?

Is your e-mail server trying to forward incoming e-mail to a different e-mail address, like this?
[your friend's e-mail] -> yourname@example.com (handled by your Linode server) --> alias/forward to: yourusername@email.it

If that's the case, it might help to explain why the smtp-out06.email.it server is the one responding with this message.

In any case, there seems to be something in the e-mail message itself that the content filter (amavisd-new) running on smtp-out06.email.it perceives as spam or malware (possible virus/trojan/similar). Could you give us an example of what was supposed to be in the contents of the e-mail your friend was trying to send to you?

My email server does not forward any email.
The messages I'm receiving is simple text without any words that can be detected as spam.
In the signature, email.it (my friend's email provider), insert normal advertising with text and link.

The problem is that email.it says that the mail is rejected by my server and not by them.

my customer continue to see their email rejected from my VPS.

this is the email that arrive to my customer.

>Destinations server rejected message with this cause:
>
><MY EMAIL ADDRESS>: host 127.0.0.1[127.0.0.1] said: 550 5.6.0
> Failed, id=06498-05-3, from MTA([127.0.0.1]:10025): 550 Content Rejected;
> Content Rejected (in reply to end of DATA command)

is there any reason why my server can reject this messages?
the messages that I should receive are simply text.

What do your logs say?

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/* TODO: need to add signature to posts */

maillog says nothing interesting, there is no trace of rejected email.

Your mail server will log rejected messages. So, if it's not in your mail server's log, it didn't hit your mail server.

According to the original bounce message at the top of the thread, "This nondelivery report was generated by the program amavisd-new at host
smtp-out06.email.it." If you aren't smtp-out06.email.it, then you didn't generate the nondelivery report.

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/* TODO: need to add signature to posts */

no nothing on the log and I'm not smtp-out06.email.it, smtp-out06.email.it is the smtp server
of my customer. email.it is something like gmail in italy to let you understand what email.it is.

the problem is that email.it says (in italian) that the message was generated by my server.
in addition my customer receive also this message:
Destinations server rejected message with this cause:
>
><MY EMAIL ADDRESS>: host 127.0.0.1[127.0.0.1] said: 550 5.6.0
> Failed, id=06498-05-3, from MTA([127.0.0.1]:10025): 550 Content Rejected;
> Content Rejected (in reply to end of DATA command)

from this message it seems that is my server that is saying: 550 Content Rejected.
Am I wrong?

127.0.0.1 is that server itself. It's the localhost IP address. Their own mail server is generating the bounce message.

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/* TODO: need to add signature to posts */