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fly · 05-15-2016, 12:34 PM

Hi,

Do you use SMTP authorization?

550 relay not permitted error often occur then email sent without SMTP authorization.

05-15-2016, 12:34 PM	#2
fly ISPsystem team Join Date: Jun 2013 Posts: 233	Hi, Do you use SMTP authorization? 550 relay not permitted error often occur then email sent without SMTP authorization.