Re: [Exim] 550 postmaster error

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Auteur: Niels Dettenbach
Datum:  
Aan: Chuck Vohs
CC: exim-users
Onderwerp: Re: [Exim] 550 postmaster error
Hello Chuck,

1.
postfix on smtp.dc.net doesnt allow - for security/spam reasons - adresses
like user@[IP-Address] - only to qualified domainnames (user@[domain.tld])

and/or

2.
You have no reverse entry for your SMTP machine IP in DNS. Postfix trys to
authenticate your Host as a "dial-up machine" as one of the configured
remoteuser over popb4smtp. Try
#dig -x [Your machines IP]
to check the correct reverse mapping of your IP.

hope that could help you,
regards,

Niels Dettenbach

Am Mittwoch, 22. Januar 2003 21:36 schrieb Chuck Vohs:
> I have exim running on a RH7.3 machine.  Works great!
> When I run a dns check at dnsreport.com for my domain, everything is great.
> When I try to send an email to postmaster@IPADDRESS, I get an error:
> <root@[IP]>: host IP[IP] said: 550-Host
>     smtp.dc.net [205.166.61.173] is not permitted 550-to relay through
>     domain.com.  550-Perhaps you have not logged into the pop/imap
>     server in the last 30 minutes. 550-You may also have been rejected
> because your ip address 550-does not have a reverse DNS entry. 550 relaying
> to <root@[IP]> prohibited by administrator

>
> postmaster@??? works fine though. What am I doing wrong?
>
>
> Thanks,
> Chuck


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