smtp problem for outlook 365 for navision 2013,2016

Question

smtp outlook 365 mail issue in Navision 2013 and 2016 above version

problem in smtp outlook 365 mail issue in Navision 2013 and 2016 above version smtp 375 error shown in mail setup sale order and grn not working because of smtp error

Answer 1

1. remove authenticater in sender mail
2. update the SMTP address to smtp-legacy.office365.com and enable legacy TLS clients in the Exchange Admin Center -> Settings -> Mail flow 'Turn on use of legacy TLS clients.