Hi Vaibhav, We saw this reply appear 1-2 months ago. I think you should treat it as invalid address, so hard bounce.
Maarten > On 11 May 2020, at 04:34, Vaibhav via mailop <mailop@mailop.org> wrote: > > Hi Everyone, > > Recently we observed below error while delivering emails to Yahoo / AOL > recipients. > > Is it expected or some error ? > > SMTP Error : 554 delivery error: dd Not a valid recipient - > > Does anyone noticed the same ? > > --Vaibhav > _______________________________________________ > mailop mailing list > mailop@mailop.org > https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
_______________________________________________ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
