notification.skype.com does not resolve. When I saw it some days ago I
thought it was an oversight that Microsoft's gonna fix instantly, but
I was mistaken:
Oct 12 01:14:09 iac postfix/smtpd[13338]: connect from
db3gmehub01.msn.com[94.245.112.10]
Oct 12 01:14:09 iac postfix/smtpd[13338]: Anonymous TLS connection established
from db3gmehub01.msn.com[94.245.112.10]: TLSv1.2 with cipher
ECDHE-RSA-AES256-SHA384 (256/256 bits)
Oct 12 01:14:10 iac postfix/smtpd[13338]: NOQUEUE: reject: RCPT from
db3gmehub01.msn.com[94.245.112.10]: 450 4.1.8 <no-re...@notification.skype.com>: Sender address
rejected: Domain not found; from=<no-re...@notification.skype.com> to=<REDACTED>
proto=ESMTP helo=<smtpi.msn.com>
$ host -t a notification.skype.com
notification.skype.com has no A record
$ host -t mx notification.skype.com
notification.skype.com has no MX record
however
$ host -t a notifications.skype.com
notifications.skype.com has address 91.190.216.101
$ host -t mx notifications.skype.com
notifications.skype.com mail is handled by 10 notifications.skype.com.
--
-- Andreas
:-)
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