voici mon probléme
(maillog)
Jan 4 23:25:26 localhost postfix/qmgr[5259]: 6058F50019C: from=<
root@localhost.localdomain>, size=592, nrcpt=2 (queue active)
Jan 4 23:26:07 localhost postfix/smtp[5262]: connect to g.mx.mail.yahoo.com[209.191.88.239]: Connection timed out (port 25)
Jan 4 23:26:37 localhost postfix/smtp[5262]: connect to c.mx.mail.yahoo.com[216.39.53.3]: Connection timed out (port 25)
Jan 4 23:27:07 localhost postfix/smtp[5262]: connect to e.mx.mail.yahoo.com[216.39.53.1]: Connection timed out (port 25)
Jan 4 23:27:37 localhost postfix/smtp[5262]: connect to f.mx.mail.yahoo.com[68.142.202.247]: Connection timed out (port 25)
Jan 4 23:28:07 localhost postfix/smtp[5262]: connect to g.mx.mail.yahoo.com[206.190.53.191]: Connection timed out (port 25)
Jan 4 23:28:07 localhost postfix/smtp[5262]: 6058F50019C: to=<
monadress@yahoo.fr>, relay=none, delay=617, delays=456/0/161/0, dsn=4.4.1, status=deferred (connect to g.mx.mail.yahoo.com[206.190.53.191]: Connection timed out)