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  • Users: rwaters
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  1. rwaters

    #5.5.0 smtp;553 sorry, that domain isn't allowed to be relayed thru th

    I have a few users that get the following message when sending to select customers. Anyone know how to fix this? #5.5.0 smtp;553 sorry, that domain isn't allowed to be relayed thru this MTA (#5.7.1)

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