Wir bekommen Meldung unten bei verschiedene Mailadresse. Was is los?
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The mail system
<email@example.com>:host aspmx.l.google.com[18.104.22.168] said:
550-5.1.1 Theemail account that you tried to reach does not exist. Please
try 550-5.1.1double-checking the recipient's email address for typos or
550-5.1.1unnecessary spaces. Learn more at 550 5.1.1
https://support.google.com/mail/?p=NoSuchUserv188si2194501wmb.168 - gsmtp
(in reply toRCPT TO command)
<S.Bennenbroek@head.com>:host mail02.head.com[22.214.171.124] said: 550
126.96.36.199is not allowed to send mail from e-bizzniss.com (in reply to