Re: [exim] 5xx errors on RCPT being ignored...

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Autor: Heiko Schlittermann
Datum: 2007-03-06 21:39 -000
To: exim-users
Betreff: Re: [exim] 5xx errors on RCPT being ignored...
Dan_Mitton@??? <Dan_Mitton@???> (Di 06 Mär 2007 20:50:48 CET):
> It seems like I am getting 5xx errors on some outbound RCPT commands
> (mostly to bounce messages), but Exim doesn't seem to take that as a
> permanent error. Instead it freezes it and retries. Is there anything I
> can do to make the 5xx's kill the message? Thanks. Example below...
>
> 2007-03-04 05:55:32 SMTP error from remote mail server after RCPT
> TO:<recognizedseller.com@???>: host q0.netfirms.com
> [38.113.168.70]: 553 sorry, that address is unknown
> 2007-03-04 05:55:32 recognizedseller.com@??? F=<> P=<>
> R=dnslookup T=remote_smtp: SMTP error from remote mail server after RCPT
> TO:<recognizedseller.com@???>: host q0.netfirms.com
> [38.113.168.70]: 553 sorry, that address is unknown
> *** Frozen (delivery error message)


Exim would like to take it as permanent error and notify the sender.
But the sender is empty (F=<>), so it freezes the message. It's a
double bounce.

To avoid it, you should avoid accepting messages that will generate
delivery errors (as messages to unknown users on your side will do, if
you do not reject them as early as possible (in some ACL))..

    Best regards from Dresden
    Viele Grüße aus Dresden
    Heiko Schlittermann
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