Problem with postfix receiving email from outside

I am fairly new to postix and I just recently followed the Howto for centos and postfix/amavisd. I can send mail using mailx on the localhost machine, but when I try to send mail using telnet to the server from outside I keep getting a weird issue in the mail logs. It keeps changing the email from "email@domain" to "emailundefpam@domain" or something similiar.

Code:

Mar 22 22:31:57 mail6 postfix/qmgr[4430]: 829B0100052: from=<[email protected]>, size=1403, nrcpt=1 (queue active)
Mar 22 22:31:57 mail6 amavis[4191]: (04191-03) Passed SPAM, [72.249.145.118] [72.249.145.118] <[email protected]> -> <[email protected]>, quarantine: spam-2-0Y3gGx0lAh.gz, mail_id: 2-0Y3gGx0lAh, Hits: 9.117, size: 318, queued_as: 829B0100052, 5290 ms
[B]Mar 22 22:31:57 mail6 postfix/smtp[4454]: 20F8D100048: to=<[email protected]>, [/B]relay=127.0.0.1[127.0.0.1]:10024, delay=55, delays=50/0/0/5.3, dsn=2.0.0, status=sent (250 2.0.0 from MTA([127.0.0.1]:10025): 250 2.0.0 Ok: queued as 829B0100052)
Mar 22 22:31:57 mail6 postfix/qmgr[4430]: 20F8D100048: removed
Mar 22 22:31:57 mail6 postfix/virtual[4503]: 829B0100052: [B]to=<[email protected]>, relay=virtual, delay=0.03, delays=0/0.01/0/0.02, dsn=5.1.1, status=bounced (unknown user: "[email protected]")[/B]
Mar 22 22:31:57 mail6 postfix/cleanup[4449]: 89E15100055: message-id=<[email protected]>
Mar 22 22:31:57 mail6 postfix/bounce[4505]: 829B0100052: sender non-delivery notification: 89E15100055
Mar 22 22:31:57 mail6 postfix/qmgr[4430]: 89E15100055: from=<>, size=3402, nrcpt=1 (queue active)
Mar 22 22:31:57 mail6 postfix/qmgr[4430]: 829B0100052: removed
Mar 22 22:31:57 mail6 postfix/smtp[4506]: connect to testing.com[69.43.161.167]:25: Connection refused
Mar 22 22:31:57 mail6 postfix/smtp[4506]: 89E15100055: to=<[email protected]>, relay=none, delay=0.18, delays=0/0.01/0.17/0, dsn=4.4.1, status=deferred (connect to testing.com[69.43.161.167]:25: Connection refused)

This is strange to me, as I do not know what is causing this issue. Any assitance would be greatly appreciated.

 

I guess that amavisd is doing that, maybe because the mail is categorized as spam. Please check your amavisd configuration.