Need email server aid

Christopher Chan christopher.chan at
Thu Apr 22 00:34:23 UTC 2010

>> Apr 21 17:01:40 ckenterprises postfix/smtpd[24088]: NOQUEUE: reject:
>> RCPT from[]: 554 5.7.1
>> <addr at>: Relay access denied; from=<device at>
>> to=<addr at>  proto=SMTP helo=<>
>> Apr 21 17:01:40 ckenterprises postfix/smtpd[24088]: disconnect from
> If I remember correctly, reject_unknown_sender_domain requires a
> working DNS, A record, and maybe MX for the connecting IP. You might
> try re-ordering that section, or just remove that as a test (be sure
> to do a postfix reload).

That's not a unknown sender domain problem, that's postfix doing the 
right thing. I suspect the OP forgot to enable authentication on his 
mail client.

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