Problemas con el correo electrónico de mi(s) dominio(s) al enviar correos a msn, hotmail y outlook.com desde mi servidor de correo alojado (Zimbra).

este es el error que devueleve, los problemas de spam ya los solucione

This is the mail system at host correo.echesortuika.com.ar.

I'm sorry to have to inform you that your message could not

be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can

delete your own text from the attached returned message.

The mail system

***@hotmail.com: host

hotmail-com.olc.protection.outlook.com[52.101.202.154] said: 550 5.7.1

Unfortunately, messages from [190.190.191.77] weren't sent. Please contact

your Internet service provider since part of their network is on our block

list (S3150). You can also refer your provider to

http://mail.live.com/mail/troubleshooting.aspx#errors. [Name=Protocol

Filter Agent][AGT=PFA][MxId=11BE5D5D778CFD82]

[PH1PEPF00062F27.namprd02.prod.outlook.com 2026-10-22T11:12:42.933Z

08DF2EAEBD5F1581] (in reply to MAIL FROM command)