Why are you trusting a third party’s word that the addresses are invalid over the actual domain owner?
Laura Sent from my iPhone > On Jul 16, 2020, at 9:14 AM, Hagop Khatchoian via mailop <[email protected]> > wrote: > > > Hi there, > > I've been dealing with some bounces from domains that are hosted on Office365 > (not independently) but from additional services purchased by GoDaddy, > Register.com, etc. > > The bounce error is "[name] wasn't found at domain.com" with a Status code: > 550 5.1.10 - > https://docs.microsoft.com/en-us/Exchange/mail-flow-best-practices/non-delivery-reports-in-exchange-online/fix-error-code-550-5-1-10-in-exchange-online > > Also, those email addresses are all verified (tried with multiple services), > so it's not a case of an invalid email address. As I've previously mentioned, > all these domains that are bouncing like this "most probably" got Office365 > plan from their registrars, hosting providers, etc. (I've done MX / NS > Lookups to verify this) - > > So, have you also experienced this kind of issue before? > > Thanks, > > Hagop > _______________________________________________ > mailop mailing list > [email protected] > https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
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