Kiran, Have you investigated the noted DSN 550 5.1.0. and checked your recipient address accordingly?
https://senderscore.org/assess/bounce-lookup/email-error/5-1-0/ Tom On Thu, Nov 16, 2023 at 5:08 AM Marco via mailop <mailop@mailop.org> wrote: > Am 16.11.2023 schrieb "Polath, Kiran via mailop" <mailop@mailop.org>: > > > 550 5.1.0 ...@<mailto:...@>... sender rejected. Please see > > https://www.spectrum.net/support/internet/{hash}-{hash} > > Does that page show something about the issue? > _______________________________________________ > mailop mailing list > mailop@mailop.org > https://list.mailop.org/listinfo/mailop >
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