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K_montalvo
Collaborator

Domain Object .smtp.office365.com Issue

Hello friends,

I'm experiencing a connection issue with domain object .smtp.office365.com since last week. The situation is on a 5000 appliance running R80.30 standalone. We had not do any changes on the FW or internal network recently, troubleshooting was made from the endpoint which is a printer with the scan to email but error on screen is that cannot contact server. If i remove on the printer_to_O365 rule the domain object and use All Internet or Any it works perfectly. On the logs i see that pass using public IP addresses but i want it to work with domain object via DNS as always. On the logs using domain object i get a drop matching the cleanup rule however the rule is permitted on top and has always  been configured like that and working fine. I executed a reboot to the Gateway yesterday and did not worked.

Is there's any command to clear the DNS cache or troubleshoot this issue?

 

Also tried with different DNS servers one private and the big search engine but no success;

]# nslookup smtp.office365.com
Server: 192.168.1.1
Address: 192.168.1.1#53

Non-authoritative answer:
smtp.office365.com canonical name = outlook.office365.com.
outlook.office365.com canonical name = outlook.ha.office365.com.
outlook.ha.office365.com canonical name = outlook.ms-acdc.office.com.
outlook.ms-acdc.office.com canonical name = LYH-efz.ms-acdc.office.com.
Name: LYH-efz.ms-acdc.office.com
Address: 52.96.29.82
Name: LYH-efz.ms-acdc.office.com
Address: 52.96.182.2
Name: LYH-efz.ms-acdc.office.com
Address: 52.96.28.178
Name: LYH-efz.ms-acdc.office.com
Address: 52.96.28.2

]#

 

[Expert]# nslookup smtp.office365.com
Server: 8.8.8.8
Address: 8.8.8.8#53

Non-authoritative answer:
smtp.office365.com canonical name = outlook.office365.com.
outlook.office365.com canonical name = outlook.ha.office365.com.
outlook.ha.office365.com canonical name = outlook.ms-acdc.office.com.
outlook.ms-acdc.office.com canonical name = MNZ-efz.ms-acdc.office.com.
Name: MNZ-efz.ms-acdc.office.com
Address: 52.96.90.50
Name: MNZ-efz.ms-acdc.office.com
Address: 52.96.87.242
Name: MNZ-efz.ms-acdc.office.com
Address: 52.96.179.226
Name: MNZ-efz.ms-acdc.office.com
Address: 52.96.183.34

[Expert#

 

Thanks,

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