On Sat, 28 Feb 2004, Peter A. Cole wrote:
> I'm experiencing a minor issue with fetchmail 6.2.4.
> There is one message in my mailbox at my ISP that fetchmail sees but won't delete or
> anything.
> When it goes to retrieve this message, it has an NDR message: SMTP error: 451 4.1.8
> Domain of sender address [EMAIL PROTECTED] does not resolve.
Hi,
this error message comes from your MTA side e.g. in my case sendmail. In
cf.README you find:
[...]
Notice: domains which are temporarily unresolvable are (temporarily)
rejected with a 451 reply code. If those domains should be accepted
(which is discouraged) then you can use
LOCAL_CONFIG
C{ResOk}TEMP
sendmail will also refuse mail if the MAIL FROM: parameter is not
fully qualified (i.e., contains a domain as well as a user). If you
want to continue to accept such senders, use
FEATURE(`accept_unqualified_senders')
[...]
In man fetchmail you find:
[...]
RETRIEVAL FAILURE MODES
The protocols fetchmail uses to talk to mailservers are next to bulletproof.
In normal operation forwarding
to port 25, no message is ever deleted (or even marked for deletion) on the
host until the SMTP listener on
the client side has acknowledged to fetchmail that the message has been either
accepted for delivery or
rejected due to a spam block.
[...]
To avoid fetchnmail from keeping this spam in your ISP's email account
add this feature to your sendmail.mc and recreate it.
Oliver
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