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Re: Fwd: Re: Duplicate messages since move to gentei.org?
> Oct 5 10:55:43 mail postfix/smtp[18708]: 3116D60973: to=<wl-en@ml.gentei.org>, relay=mx.gentei.org[2001:240:a5::1]:25, delay=1.7, delays=0.13/0.05/1.2/0.33, dsn=5.0.0, status=bounced (host mx.gentei.org[2001:240:a5::1] said: 553 SMTP-server should HELO correctly. Fix it.(#5.7.1) (in reply to RCPT TO command))
the most common cause is a misfeatured or misconfigured MTA which is not
putting an FQDN in the HELO but rather something such as 'localhost'
randy