Linux administration seting up mail at my own domain on which I can't receive mail

I both domain and Im setting up Hestia at my VPS but after I setup SMTP Relay to be at brevo. SMTP relay at Brevo (formerly Sendinblue) is a service that allows me to send emails through their servers using the Simple Mail Transfer Protocol (SMTP). Essentially, it acts as a middleman for sending emails from your system or application to the recipient's email server. So I can send mail to my gmail but I cant receive one from it, I'm getting an error 554 5.7.1 : Relay access denied I did the authentication for relay service for my domain, what is MTA? I'm a newbie so here is log from my machine $ tail -f -s0.1 /var/log/exim4/mainlog 2025-06-10 11:11:57 End queue run: pid=1218117 2025-06-10 11:25:51 TLS error on connection from cloud-scanner-260b560e.internet-research-project.net (masscan) [172.104.24.197] (gnutls_handshake): The TLS connection was non-properly terminated. 2025-06-10 11:41:57 Start queue run: pid=1219994 2025-06-10 11:41:57 End queue run: pid=1219994 2025-06-10 12:00:07 1uOxeB-0000000588J-2lFU myname@gmail.com R=send_via_smtp_relay T=smtp_relay_smtp H=smtp-relay.brevo.com [1.179.115.1] X=TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_128_GCM:128 CV=yes A=smtp_relay_login K C="250 2.0.0 OK: queued as " 2025-06-10 12:00:07 1uOxeB-0000000588J-2lFU Completed 2025-06-10 12:11:57 Start queue run: pid=1223637 2025-06-10 12:11:57 End queue run: pid=1223637 2025-06-10 12:18:37 TLS error on connection from azpdssbc3btd.stretchoid.com [20.65.194.188] (gnutls_handshake): An unexpected TLS packet was received. Somewhere I found similar issue and one guy asked to show log with that command, which log should I post if needed then ? Here is /etc/exim4/update-exim4.conf.conf # /etc/exim4/update-exim4.conf.conf # # This is a Debian specific file dc_eximconfig_configtype='local' dc_other_hostnames='mydomain' dc_local_interfaces='127.0.0.1 ; ::1' dc_readhost='' dc_relay_domains='' dc_minimaldns='false' dc_relay_nets='' dc_smarthost='' CFILEMODE='644' dc_use_split_config='false' dc_hide_mailname='' dc_mailname_in_oh='true' dc_localdelivery='mail_spool' Here's a picture that might be useful: