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how_to:550_5.7.1_recipient_prohibited_x [2018/11/14 10:45] (current)
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|+||======550 5.7.1 Recipient Prohibited (x)======|
|+||(where 'x' is a number)|
|+||This means that you have an SMTP rule which is rejecting this recipient. The (x) indicates the SMTP rule number which is causing the rejection.|
|+||View & edit your SMTP rules at Services -> SMTP Server -> Filtering -> Edit SMTP Rules.|