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Error Unrouteable address and 554

Posted: Fri Oct 06, 2017 5:17 pm
by tuliovargas
Hello everyone,

I'm facing two issues with VextaCP Webmail, most of time and address it is working very well, however, some destination it doesn't work.

1º Issue:
This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

[email protected]
host mailserver.mixdinternet.com.br [177.47.25.166]
SMTP error from remote mail server after RCPT TO:<[email protected]>:
554 5.7.1 <vmi101010.contabo.host>: Helo command rejected:
Contate o Postmaster


Reporting-MTA: dns; vmi101010.contabo.host

Action: failed
Final-Recipient: rfc822;[email protected]
Status: 5.0.0
Remote-MTA: dns; mailserver.mixdinternet.com.br
Diagnostic-Code: smtp; 554 5.7.1 <vmi101010.contabo.host>: Helo command rejected: Contate o Postmaster



2º Issue:
This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

[email protected]
Unrouteable address
Reporting-MTA: dns; ip-172-31-34-77.sa-east-1.compute.internal

Action: failed
Final-Recipient: rfc822;[email protected]
Status: 5.0.0