Hey Naim,
this happened to me with domains that I bought from spaceship, mainly it is monkey blacklist that your domain might be in, I resolved it by changing the domain routing and nameservers to current host
Hi, is anyone else facing sender bounces with smartlead, the domains are configured properly and the email are warmed up
in the details it shows that the message was sent but is under sender originated bounce
Anyone has idea why this is happening?