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I have a server, and it is running a error for one email only (all other mails in that domain are working).

How can i fix it? (The error is above:)

May 17 11:43:56 webserver postfix/policyd-weight[5596]: weighted check:  IN_DYN_PBL_SPAMHAUS=3.25 NOT_IN_SBL_XBL_SPAMHAUS=-1.5 NOT_IN_SPAMCOP=-1.5 NOT_IN_BL_NJABL=-1.5 DSBL_ORG=ERR(0) CL_IP_NE_HELO=4.75 RESOLVED_IP_IS_NOT_HELO=1.5 HELO_NUMERIC=10.625 (check from: .eticagest. - helo: .[]. - helo-domain: .17].)  FROM_NOT_FAILED_HELO(DOMAIN)=6.25; <> <helo=[]> <> <>; rate: 21.875 
May 17 11:43:56 webserver postfix/policyd-weight[5596]: decided action=550 Mail appeared to be SPAM or forged. Ask your Mail/DNS-Administrator to correct HELO and DNS MX settings or to get removed from DNSBLs; MTA helo: [], MTA hostname:] (helo/hostname mismatch); <client=> <helo=[]> <> <>; delay: 6s 
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3 Answers 3

The client sent EHLO or HELO as a greeting to your mail server. According to RFC 2821 (section the client should send its FQDN or (if none available) an address literal (e. g. its IP address).

So the correct greeting would be EHLO (or another valid FQDN pointing to the client) or EHLO if no meaningful hostname is available but definitely not EHLO

Since the error occurs because of a misconfiguration of the client, you could only put the client on a whitelist to always accept its mails.

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This client is using thunderbird, what can i do to corrent that? –  CuSS May 17 '10 at 13:46
I think the problem is that SMTP client isn't authenticating, i will confirm that –  CuSS May 17 '10 at 13:51
OK, the problem was on the SMTP Authenticating, the client wasn't authenticating. Thanks for your full answer. Your answer didn't solve my problem, but i will give +1 for the simpaty and details in the answer ;) (Here on Server Fault i can't vote up yet :( but when i can, i will vote ;) ) –  CuSS May 17 '10 at 14:33

Try setting:

myhostname =


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that didn't solve, but thanks for your answer ;) –  CuSS May 17 '10 at 14:36
up vote 0 down vote accepted

The client doesn't had authentication on the SMTP Server. For some strage reason, it gaves this error.

Thanks all for the answers ;)

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