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null null's avatar
null null
Copper Contributor
Aug 14, 2018
Solved

550 5.7.64 Relay Access Denied ATTR36

Hello, I just setup a client with a new Office365 and I am running into problems with inbound email bouncing. The issue seems to be two problems. First email are bouncing due to: "Host or...
office 365
  • null null's avatar
    null null
    Sep 20, 2018

    Hi,

     

    After a week of calling Microsoft support twice a day they finally fixed it.

    They didn't tell me what the issue was.

     

    I guess who ever runs into the same issue will need to do the same.

     

    Thank you,

    Avrom

D Nageswar Rao's avatar
D Nageswar Rao
Copper Contributor
Sep 18, 2018

Hello All,

 

We are also seeing smtp;550 5.7.64 Relay access denied ATTR36. while sending emails from relay using SMTP IIS server.

 

Thanks,

Nageswar

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