Re: Could not send email to office 365

On 01/05/13 10:21, ISHII, Yuji wrote:

Hello folks,

Have you ever seen DNS issues on Office 365?

MX record of Office 365 is example.mail.eo.outlook.com. I can get the MX record, however, I could not get the A record of the MX record, got Timeout.

Does anyone have the same issue?

Sincerely, Yuji

This may be a red herring, but I've heard of some dropping of DNS queries for the names within outlook.com domains where the queries are all coming from source port 53 (i.e. your recursive server doesn't use query source port randomization). Might be worth checking what the recursive server you're using is doing? See https://www.dns-oarc.net/oarc/services/porttest Cathy