Emails sent to hotmail domains are returned undelivered

[Anonymous]

Hi

Any emails I send to hotmail accounts are returned undelivered with the following message

550 OU-001 (COL004-MC2F2)Unfortunately, messages from 78.***.17.** weren't

    sent. Please contact your Internet service provider since part of their

    network is on our block list.

Any ideas how I resolve this?

[jonsie]

If you are using o2 web mail I'm afraid it is now defunct....

[MI5]

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JDL1 wrote:

Any ideas how I resolve this?

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Set up a gmail or Outlook account.

[Martin-O2]

@Anonymous Is this from an O2 webmail accout? 

[Anonymous]

Hi

No this is from a business email address.

We use O2 business broadband.

FYI we don't send 'marketing' emails or spam.

[Martin-O2 · Accepted solution]

Understood. The O2 webmail service has recently closed so was making sure it wasn't related to that. If you're  having issues with the broadband and have tried the usual restarting the router then contacting customer services is your best bet. 

[Curr946]

wasnt o2 BB sold?

[Martin-O2]

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@Curr946 wrote:
wasnt o2 BB sold?

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That's probably something I should know! I'll get that clarified ASAP. Thanks for the heads up @Curr946

[MI5]

We're talking business broadband here not consumer so I've no idea if it's run separately or not?

[adamtemp64]

O2 business broadband is alive and well http://www.o2.co.uk/business/products/broadband

I suggest you contact o2 business broadband customer services on your normal o2 business contact number