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I am a hotmail/outlook user and use windows10. Currently, I am having a problem receiving emails online and on my phone. For instance, my sister recently sent one and I didn't receive it, yet when she forwarded it to my gmail, which is connected to my hotmail account, it was received.
I looked up what might be going on at this site: https://support.office.com/en-us/article/I-didn-t-receive-an-email-someone-sent-to-my-Oultook-com-account-d39e3341-8d79-4bf1-b3c7-ded602233642
I tried all solutions, but to no avail. It doesn't appear to be a junk email problem, such as in other people's cases.
Recently, my sister got a message entitled: "Warning: Could not send message for past 4 hours." Pasted in the message was this
<<< 421 RP-001 (SNT004-MC1F36) Unfortunately, some messages from 148.163.XXX.XXX weren't sent. Please try again. We have limits for how many messages can be sent per hour and per day. You can also refer to http://mail.live.com/mail/troubleshooting.aspx#errors. ... while talking to mx1.hotmail.com.:
Blockquote
Note: removed IP Address for privacy.
So my problem appears to be related to this: "421 RP-001" error, however I don't why this might be, because my home network works for others and everything was fine yesterday.
How should I resolve this? Why might this be happening?
Jonesn11
Posted 2017-07-02T02:02:11.237
Reputation: 1
2"Why might this be happening?" - Sounds like your sister's account is compromised and being used to send spam, based on the message she received, saying she was sending to many emails – Ramhound – 2017-07-02T02:09:46.490
Ah I suspected it didn't have to do with my email. The only other email I didn't get came from this other person using a Stanford email address. So it might be a problem with their server... – Jonesn11 – 2017-07-02T04:34:20.500