exim_dumpdb /var/spool/exim retry | grep some@mail
R:some@mail: -44 13133 SMTP error from remote mail server after RCPT TO:: host mail.linux4you.tk [X.X.X.X]: 451 Greylisted, please try ago

exim_fixdb /var/spool/exim retry
R:some@mail:
D
q