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pramod1
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EXCHANGE 2010

emails are going fine from all mailboxes to one gentleman except from SMTP relay server.

This occurs from any machine (I’ve tested both from my Workstation in Woking, and from several machines in the 172.24.72.* IP range)


Remote host said: 550 5.7.1 Service unavailable; Client host [62.190.150.190] blocked using FBLW15; To request removal from this list please forward this message to delist@messaging.microsoft.com

Discussion between MS and someone with a similar issue can be found here: https://community.office365.com/en-us/f/156/t/289633
So we probably just need to email delist@messaging.microsoft.com quoting the IP 62.190.150.190.
… but I don’t know what CC policies are on that / whether it’s appropriate for me to do; I would have through that would be the MDS action to resolve issues such as this one?

can you help find the cause
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Will Szymkowski

8/22/2022 - Mon
Will Szymkowski

Yes you would have to email them to remove you from their blacklist.

Will.
pramod1

ASKER
remove who ? I didn't get it and why this is happening?
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Will Szymkowski

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