asked on

Delivery Status Notification (Delay) - Outlook Calendar meeting requests

When sending Outlook Calendar meeting requests to certain people I get the following message:
This is an automatically generated Delivery Status Notification.
THIS IS A WARNING MESSAGE ONLY.
YOU DO NOT NEED TO RESEND YOUR MESSAGE.
Delivery to the following recipients has been delayed.
emailaddress@pop3domain.com
emailaddress@pop3domain.com
emailaddress@pop3domain.com

The user sending the meeting requests is on a hosted Exchange server. The recipients are on a POP3 server. Test emails to those same email addresses send fine. It appears to only be Outlook meeting requests.

I tried the steps posted on a previous question but I get an error "DNS request timed out." and the IP shown is a OpenDNS server. Below are the results of those steps from NashvilleGuitarPicker
https://www.experts-exchange.com/questions/20993899/Delivery-to-the-following-recipients-has-been-delayed.html

> set type=mx
> mail.pop3domain.com
Server: WL.domain.com
Address: 192.168.2.1

Non-authoritative answer:
mail.pop3domain.com canonical name = pop3domain.com
pop3domain.com MX preference = 50, mail exchanger = pop3domain.com
pop3domain.com MX preference = 10, mail exchanger = pop3domain.com.s7
a1.psmtp.com
pop3domain.com MX preference = 20, mail exchanger = pop3domain.com.s7
a2.psmtp.com
pop3domain.com MX preference = 30, mail exchanger = pop3domain.com.s7
b1.psmtp.com
pop3domain.com MX preference = 40, mail exchanger = pop3domain.com.s7
b2.psmtp.com
> ping mail.pop3domain.com
Server: mail.pop3domain.com.Belkin
Address: 67.215.65.132

DNS request timed out.
timeout was 2 seconds.
*** Request to mail.pop3domain.com timed-out
>>

>C:\ping mail.pop3domain.com

Pinging pop3domain.com ["POP3 IP"] with 32 bytes of data:
Reply from "POP3 IP": bytes=32 time=32ms TTL=55
Reply from "POP3 IP": bytes=32 time=35ms TTL=55
Reply from "POP3 IP": bytes=32 time=32ms TTL=55
Reply from "POP3 IP": bytes=32 time=35ms TTL=55

Ping statistics for "POP3 IP":
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 32ms, Maximum = 35ms, Average = 33ms

>>

>C:\telnet mail.pop3domain.com 25
Connecting To mail.pop3domain.com...Could not open connection to the host, on
port 25: Connect failed

ASKER CERTIFIED SOLUTION

Rick Fee

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Rick Fee

Well I believe you are running into the known issue.

Chad B

ASKER

Thanks for the quick response! I'll check with my Hosted Exchange provider and let you know what they say.

Rick Fee

My guess is they should have this set. This usually occurs when you have modified a calendar and it attempts to update the attendees. So my guess now this is not the case.

Chad B

ASKER

I just tested it and that is the case. The "Delivery Status Notification (Delay)" error only occurs when you change the meeting and it attempts to update the attendees. I 'm still waiting to hear back from our Hosted Exchange provider.

Rick Fee

Yes this is the exact issue...when a calendar appt is set works...but then when you change and update the appt it does not send and is caught in the queue.

Chad B

ASKER

Support said that a hotfix needed to be applied to the Exchange server. Thanks for your help!

amyb

Are there any other work arounds if the hotfix to the server does not fix the issue. I have updated the users office with the latest service pack. The user continues to have the same issue.