Thursday, September 13, 2018

postfix - Outlook is rejecting emails without any notification

i have configured postfix with opendkim. Everything is working fine, I have tested DKIM records as well as DMARC and SPF, everything seems fine. I am also receiving emails on my gmail account in Inbox. But when I try to send email to Outlook.com, the email does not work. Also, I do not see any error in the mail log.



Mail log:




Apr 16 17:51:34postfix/smtp[4778]: E6911060F:
to=<*******@hotmail.com>, relay=mx1.hotmail.com[65.54.188.72]:25,
delay=2, delays=0.09/0/1.2/0.75, dsn=2.0.0, status=sent (250

Queued mail
for delivery) Apr 16 17:51:34 postfix/qmgr[4697]: E6911060F:
removed




I do not receive in either junk or inbox @ hotmail. Seems as Outlook is just rejecting the email.



Couple of days ago everything was working fine, but I was receiving email in the junk, then I did setup DKIM, I started getting emails in the Inbox but after somedays I stopped receiving email to my Outlook at all, I do not see any error too.



In my SPF records I am using: "v=spf1 a ~all"




And when I try to send an email from Outlook to my email@domain.org
I do receive the email, but in the logs this is what I see.



Apr 16 17:53:22 postfix/smtpd[5016]: Anonymous TLS connection established from mail-oln040092255027.outbound.protection.outlook.com[40.92.255.27]: TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)
Apr 16 17:53:23 postfix/smtpd[5016]: 3F45D4060F: client=mail-oln040092255027.outbound.protection.outlook.com[40.92.255.27]
Apr 16 17:53:23 postfix/cleanup[5023]: 3F45D4060F: message-id=
Apr 16 17:53:23 opendkim[819]: 3F45D4060F: mail-oln040092255027.outbound.protection.outlook.com [40.92.255.27] not internal
Apr 16 17:53:23 opendkim[819]: 3F45D4060F: not authenticated
Apr 16 17:53:23 opendkim[819]: 3F45D4060F: failed to parse authentication-results: header field

Apr 16 17:53:23 opendkim[819]: 3F45D4060F: DKIM verification successful


I am still confused. can anyone detect the issue? If you need anymore configurations please let me know.

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