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Who Me Too'd this topic

bounce verification

DISmekalin
Level 1
Level 1

Error reports began to come more recently like:

#5.0.0 smtp; 5.1.0 - Unknown address error 550-'Callback setup failed while verifying <address@domain.zone>\n(result of an earlier callout reused).\nThe initial connection, or a HELO or MAIL FROM:<> command was\nrejected. Refusing MAIL FROM:<> does not help fight spam, disregards\nRFC requirements, and stops you from receiving standard bounce\nmessages. This host does not accept mail from domains whose servers\nrefuse bounces.\nSender verify failed' (delivery attempts: 0)> #SMTP#

Tell me, please, what settings need to be adjusted for a particular domain or for all?

Thanks in advance.

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