Unable to receive emails from some google hosted senders
Problem reported by Jason Wilhelm - 1/14/2020 at 5:21 PM
Resolved
Struggling with this one. We have a vendor that is unable to email us from vehicleaccessorycenter.com. Looking in the troubleshooting logs I am not able to see where anything is hitting our server. Doing some digging it looks like their email is hosted by google and they "have no point of contact" on their side to reach out to. We do not seem to have any issues receiving emails from @gmail.com addresses,

Last month (12/19) we had an issue with our domain not resolving for about 5 hours or so and I am thinking that is when we started seeing this issue. 


 Anyone have any ideas?

The response was:
The recipient server did not accept our requests to connect. Learn more at https://support.google.com/mail/answer/7720[mail.aksales.com. 63.140.113.194: timed out] 

7 Replies

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0
Jason Wilhelm Replied
Answered my own question. FYI we have a geoblock on our email as 99.9999999% of communications is from inside North America. It has helped cut down on spam a ton. Some reason the firewall is seeing the google servers for vehicleaccessorycenter.com as coming from outside US/Canada, hence the email is  getting blocked before it even gets to smarter mail.
2
John Marx Replied
How do you put a geo block on SmarterMail? I would so love to do this.
0
Jason Wilhelm Replied
John,
 This is something that is setup at the firewall level. We subscribe to a service from Nuspire and they offer the ability to geo block for our email server. Outside of that I am not sure how they are technically doing it, probably have a list if IP addresses and originating countries and then they do a lookup as needed.
2
Kyle Kerst Replied
Employee Post
I know the original issue is now resolved, but I wanted to comment on the geoblock being mentioned. You can potentially set this up in Settings>Security>Blacklist. Here you'd simply enter a range that includes all IP addresses in a given country or location as a blacklist entry, preventing IP blocks from those locations from connecting. To ensure you don't block any traffic on a false positive basis, you can also implement a whitelist entry for your office IP addresses as we will check the whitelist before the blacklist. 
Kyle Kerst
Technical Support Specialist
SmarterTools Inc.
(877) 357-6278
www.smartertools.com
1
John Marx Replied
Thanks Kyle. I see I've used this area before. I will also talk to our Firewall vendor as well to do a block there as well.
1
Kyle Kerst Replied
Employee Post
You're very welcome John, happy to help! Be sure to add the range in CIDR notation here as it won't accept a hyphenated range. Have a good one!
Kyle Kerst
Technical Support Specialist
SmarterTools Inc.
(877) 357-6278
www.smartertools.com
1
John Marx Replied
Here's a site for getting IP Ranges or CIDR (per country). Be selective though as China has 13,000 rows. There is no import functionality and I would expect that many rows imported (or manually entered) would cause some serious slowdowns.

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