Relayhost für eigenen Mailserver?

Hier nochmal ein Auszug aus dem mail.log, ist aber denke ich eindeutig, dass er ein Problem mit der IP hat.
An meine t-online Adresse:

Jan 31 21:12:11 debian-1 postfix/pickup[4304]: BD27578B: uid=0 from=
Jan 31 21:12:11 debian-1 postfix/cleanup[4318]: BD27578B: message-id=<20100131201211.BD27578B@#####################>
Jan 31 21:12:11 debian-1 postfix/qmgr[4305]: BD27578B: from=, size=308, nrcpt=1 (queue active)
Jan 31 21:12:12 debian-1 postfix/smtp[4321]: BD27578B: host mx02.t-online.de[194.25.134.9] refused to talk to me: 554 IP:91.6.60.### – A problem occurred. (Ask your postmaster for help or to contact tosa@rx.t-online.de to clarify.)
Jan 31 21:12:12 debian-1 postfix/smtp[4321]: BD27578B: host mx03.t-online.de[194.25.134.73] refused to talk to me: 554 IP:91.6.60.### – A problem occurred. (Ask your postmaster for help or to contact tosa@rx.t-online.de to clarify.)
Jan 31 21:12:12 debian-1 postfix/smtp[4321]: BD27578B: host mx01.t-online.de[194.25.134.72] refused to talk to me: 554 IP:91.6.60.### – A problem occurred. (Ask your postmaster for help or to contact tosa@rx.t-online.de to clarify.)
Jan 31 21:12:13 debian-1 postfix/smtp[4321]: BD27578B: to=, relay=mx00.t-online.de[194.25.134.8]:25, delay=1.3, delays=0.25/0.07/0.97/0, dsn=4.0.0, status=deferred (host mx00.t-online.de[194.25.134.8] refused to talk to me: 554 IP:91.6.60.### – A problem occurred. (Ask your postmaster for help or to contact tosa@rx.t-online.de to clarify.))

An meine Arbeitsadresse funktioniert dies:

Jan 31 21:07:26 debian-1 postfix/pickup[4304]: DB36F78B: uid=0 from=
Jan 31 21:07:26 debian-1 postfix/cleanup[4312]: DB36F78B: message-id=<20100131200726.DB36F78B@##############>
Jan 31 21:07:26 debian-1 postfix/qmgr[4305]: DB36F78B: from=, size=300, nrcpt=1 (queue active)
Jan 31 21:07:27 debian-1 postfix/smtp[4314]: DB36F78B: to=, relay=mailx.#######.de[###.###.###.###]:25, delay=1.2, delays=0.24/0.07/0.45/0.47, dsn=2.0.0, status=sent (250 Ok: queued as 0428943F4)
Jan 31 21:07:27 debian-1 postfix/qmgr[4305]: DB36F78B: removed