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Re: genuine email got blocked as spam

2005-06-29 15:50:24


Before you ask such a question, try google: deferred
i did found the greylist web side with no particular standard they say there 
are a lot 
people using it in a different way

Normally an SMTP-server would not retry that soon, see
RFC 2821:
http://www.faqs.org/rfcs/rfc2821.html
"In general, the retry interval SHOULD be at
 least 30 minutes

my server has in his sendmail.sf O MinQueueAge=30m

from michele i received:
With this error, you should retry to send the message within the
300 Seconds, which mean, if you send an (unverified) message, the
receiving host reject it and after 300 Seconds it is bounced.

i am getting confused.

my problem is there are thousends of euros getting lost not to be able to send 
this emails.



Matthias Haeker

mhaeker(_at_)its-h(_dot_)de

***
----- Original Message -----
From: rvtol(_at_)isolution(_dot_)nl
To: procmail(_at_)lists(_dot_)RWTH-Aachen(_dot_)DE
Sent: Thu, 30 Jun 2005 00:30:42
Subject: Re: genuine email got blocked as spam


Matthias Haeker schreef:

MDeferred: 450 4.1.0 <someone(_at_)xxx-yyy(_dot_)de>: Sender
address rejected:
unverified address: Address verification in progress

or:

MDeferred: 450 <anybody(_at_)world(_dot_)de>: Recipient address
rejected:
Greylisted for 300 seconds

Before you ask such a question, try google: deferred
450 greylisted
seconds

SMTP error 450 is "Requested mail action not taken:
mailbox
unavailable".

Your mail server is expected to wait for at least 300
seconds (5
minutes) before retrying. That it should do by itself,
such standard
behaviour should not need any action by you.

Normally an SMTP-server would not retry that soon, see
RFC 2821:
http://www.faqs.org/rfcs/rfc2821.html
"In general, the retry interval SHOULD be at
 least 30 minutes; however, more sophisticated and variable
strategies
 will be beneficial when the SMTP client can determine
the reason for
 non-delivery."
Older MS Exchange servers are known to have the bad
habit to retry too
fast.

-- 
Grtz, Ruud

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