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exim failure

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Hi,

In case this message is duplicated, apology in advance.

After configuring exim for a new smarthost, message sending fails.
This might help to identify the problem.

root@dalton:/home/root# exim -bh 142.103.1m.1n

**** SMTP testing session as if from host 142.103.1m.1n
**** but without any ident (RFC 1413) callback.
**** This is not for real!

>>> host in hosts_connection_nolog? no (option unset)
>>> host in host_lookup? yes (matched "*")
>>> looking up host name for 142.103.1m.1n
>>> IP address lookup yielded "dalton.invalid"
>>> checking addresses for dalton.invalid
>>>   142.103.1m.1n OK
>>> host in host_reject_connection? no (option unset)
>>> host in sender_unqualified_hosts? no (option unset)
>>> host in recipient_unqualified_hosts? no (option unset)
>>> host in helo_verify_hosts? no (option unset)
>>> host in helo_try_verify_hosts? no (option unset)
>>> host in helo_accept_junk_hosts? no (option unset)
>>> host in pipelining_connect_advertise_hosts? yes (matched "*")
220 dalton.invalid ESMTP Exim 4.94.2 Wed, 22 Mar 2023 13:02:25 -0700

LOG: SMTP syntax error in "" H=dalton.invalid [142.103.1m.1n] 
unrecognized com
mand
500 unrecognized command
LOG: SMTP command timeout on connection from dalton.invalid 
[142.103.1m.1n]
421 dalton.invalid: SMTP command timeout - closing connection
root@dalton:/home/root#

A test message produces this in /var/log/exim4/mainlog

2023-03-22 13:39:10 1pf5Ek-0000gQ-Dk <= peter@easthope.ca 
H=localhost.localdomai
n (dalton) [127.0.0.1] P=smtp S=586
2023-03-22 13:39:10 1pf5Ek-0000gQ-Dk == peter@easthope.ca R=smarthost 
T=remote_s
mtp_smarthost defer (-53): retry time not reached for any host for 
'easthope.ca'

How can the origin of "SMTP syntax error" be found?
Is the correction known already?

Thx,                          ... P.

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exim failure peter@easthope.ca - 2023-03-22 22:10 +0100
  Re: exim failure David Wright <deblis@lionunicorn.co.uk> - 2023-03-22 23:10 +0100

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