When I try to connect to the backup mailserver for my domain, I get the following error:
mail2.jodoshared.com. - 64.156.222.117 [Could not connect: Connection closed before I received all my data]
When I try to connect to the backup mailserver for my aliased domain (with domain mail aliasing setup), I get a different error:
mail2.jodoshared.com. - 64.156.222.117 [Could not connect: Got an unknown RCPT TO response: 553 sorry, that domain isn’t allowed to be relayed thru this MTA (#5.7.1)]