On 2018-02-09 14:20, John Levine wrote:
In article <CABa8R6txLmPrVSbVXzQBM+UB=fx6tdlv_ebpalps1q1ktvh...@mail.gmail.com> 
you write:
I'm confused, the first post said valid credentials, is that what everyone
else is seeing?

Nearly all valid creds seems weirder than mostly invalid... modulo whatever
amount of hijacked or reused creds there are.

Remember that Outlook does account consolidation like Gmail does, and
outgoing mail for a consolidated address usually goes through the
account's own server to make it more DMARC-y.

It's not surprising that Outlook would be doing valid SMTP AUTH, but you would
expect it to send a message after it does so.

I could imagine them doing a periodic recheck to validate passwords or find problems too, but I would only expect a single connection per account.

For those seeing this, is it hitting the same account more than once, or just once per account?

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