hello,
i will fix and resolve the error issue now , i have expertise in this
i am server admin having 7 years of expertise in server set up,bulk mailing, email marketing , i will set up and configure mailwizz,interspire,acelle,mumara,postfix,powermta etc and will pass all the authentications like spf,dkim,dmarc ,dns etc and will also provide you 10/10 tester results.
lets discuss
thanks and regards