Hi,
our mailserver rejects mails from servers that don’t send a resolvable HELO-hostname. As such, customers have been complaining about UPC: 450 4.7.1 <vie01a-dmta-ch01.mx.upcmail.net>: Helo command rejected: From this posting, although a bit dated: https://www.mail-archive.com/swinog@lists.swinog.ch/msg06676.html <https://www.mail-archive.com/swinog@lists.swinog.ch/msg06676.html> it looks as if there is some sort of typo or it was simply forgotten to update DNS. Can someone fix this? Rainer
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