Sender domain must exist

Christian Krackowizer kra1 at
Mon Nov 22 14:09:03 UTC 1999

At 12:07 22.11.1999 +0100, you wrote:
>On 22.11.99 10:52:42 Rony Gabriel  wrote:
>>is your domain listed on the dns? if not, then thats the reason.
>>if yes, then you are not properly masquearding the mails to reflect the
>>listed domain name.
>these are not our domains. from time to time there are some domains with
>this errormessage. its not happen on every day, only some. we got mails
>from these and send mail to these domains. its a curios phenomenon.
>>| Hi,
>>| from time to time mails are blocked from our mailserver ( sendmail 8.9.3

sendmail contacts the NS. When the NS cannot solve (line down, forwarder
fails ...), sendmail reports this as 'Sender domain must exist'.
Normally, this message is only seen in (old) logfiles, in the meantime, the
mail has been already sent.

mit freundlichen Gruessen

Christian Krackowizer

| Krackowizer Christian               mailto:kra1 at |
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