You must have received SMTP credentials as following, but you will have to use credentials which are defined in "Outgoing" section.
Quick note: "Incoming" section is only to receive emails like replies, bounces & abuse reports. If you send emails using credentials mentioned in "Incoming" sections, you emails will fail email authentications like SPF, DKIM & DMARC.
--------------------------------------------------
SMTP Server (Outgoing)
--------------------------------------------------IP/Host: xxx.xxx.xxx.xxx
Port: 2525
Domain: assigned_domain.tld
Username: xxxxxxxxxxxx@IPwarmup
Password: xxxxxxxxxxxxx--------------------------------------------------
Email Accounts (Incoming)
--------------------------------------------------Host: mail.assigned_domain.tld
Port: 143 or 110
Username: bounce@assigned_domain.tld
Password: xxxxxxxxxxxxx
Username: abuse@assigned_domain.tld
Password: xxxxxxxxxxxxx
Username: info@assigned_domain.tld
Password: xxxxxxxxxxxxx
If you are facing any issues in connecting the SMTP with your EMA (Email Marketing Application) then you can contact to our Support team: here