from few days we are receiving cmplaints from may of our subscribed clients that they are not getting daily alert mail...Where as we checked in our logs that the mails are accepted by the servers whose Mx is hostname.com.mail.protection.outlook.com .. but all clients subscribing to this service are not getting our mails in their inbox.. mails are accepted without any fault to Client mail server.. Following is the log for your ref from our sendmail server.Note- we have valid SPF record also our mail server is not blacklisted anywhere. Mail contains HTML embedded info about our services for which client is subscribed.
to=<xxxx@xxxxx.co.za>, delay=00:00:08, xdelay=00:00:08, mailer=esmtp, pri=206583, relay=xxxxx-co-za.mail.p...ction.outlook.com. [xxx.xxx.154.23], dsn=2.0.0, stat=Sent (<VPOP31.4.0e.20140910113951.917.f85.2.34364a7d@CMS1> [InternalId=58007828300753, Hostname=xxxxxxx.eurprd03.prod.outlook.com] Queued mail for delivery)kindly suggest the work around for the problem.