Italiaonline/Libero Mail is experiencing inbound email issues that prevent sending mail to the domains libero.it, virgilio.it, inwind.it, iol.it and blu.it. This is causing 4xx SMTP delays and timeouts, with small amounts or no amounts of mail getting through. Italiaonline is aware of the issue and is working to resolve it, and can be followed on Facebook for updates.
Excerpt from the main article:
Italiaonline/Libero Mail is having inbound email issues, impeding attempts to send mail to the domains libero.it, virgilio.it, inwind.it, iol.it and blu.it. Senders are reporting various 4xx SMTP delays and timeouts when attempting to connect. Either small amounts of mail or no amounts of mail are getting through currently (it’s not clear to me which). This appears to have been ongoing since Sunday evening, local time. Italiaonline is aware of the issue and is working to resolve it, reporting here that “We have been working tirelessly for several hours now to solve an unexpected and unforeseen infrastructural problem.”You can follow them