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554 5.4.0


Email error 554 5.4.0 – What is it, and what are its causes

554 5.4.0‘ is a email bounce error that is usually seen after a server migration or a mail server reconfiguration.

Here at Bobcares.com, we help hosting providers (web hosts, VPS hosts, etc.) resolve such errors as part of our Outsourced Tech Support services.

A typical email bounce looks like this:

host xxx.xxx.xxx.xxx[yyy.yyy.yyy.yyy] said: 554 5.4.0 id=03742-03-6 - Rejected by next-hop MTA on relaying, from MTA(smtp:[zzz.zzz.zzz.zzzz]:31142): 554 5.4.0 Error: too many hops (in reply to end of DATA command)

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