Interestingly, earlier this week we had a Canadian customer unable to reach
their account on our mail servers hosted in AWS us-east-1.
They put their devices on a VPN and then had no issue.
--
_________________________________________________________________
L. Mark Stone, Founder
North America's Leading Zimbra VAR/Training Partner
For Companies With Mission-Critical Email Needs
Winner of the Zimbra Americas VAR Partner of the Year -Two Years Running!
On Friday, August 28th, 2026 at 3:54 PM, Scott Q. via mailop
<[email protected]> wrote:
> Very strange. I can ping all nodes, but port 25 is closed from 3-4 different
> IPs/networks in Canada. They must be filtering for some reason. If anyone
> from Google is reading this , can you check what's going on ?
>
> ping mx2.smtp.goog
> PING mx2.smtp.goog (216.239.34.151): 56 data bytes
> 64 bytes from 216.239.34.151: icmp_seq=0 ttl=118 time=7.727 ms
> 64 bytes from 216.239.34.151: icmp_seq=1 ttl=118 time=7.738 ms
>
> nc mx2.smtp.goog 25 -v
> ^C
>
> On Friday, 28-08-2026 at 12:37 Bastian Blank via mailop wrote:
>
>> On Fri, Aug 28, 2026 at 12:07:16PM -0400, Scott Q. via mailop wrote:
>>> Can you guys reach those servers properly ?
>>
>> | % nc mx1.smtp.goog 25 -v
>> | Connection to mx1.smtp.goog (2001:4860:4802:32::97) 25 port [tcp/smtp]
>> succeeded!
>> | 220 mx.google.com ESMTP ffacd0b85a97d-482fbb287fdsi3510129f8f.207 - gsmtp
>> | ^C
>> | % nc mx2.smtp.goog 25 -v
>> | Connection to mx2.smtp.goog (2001:4860:4802:34::97) 25 port [tcp/smtp]
>> succeeded!
>> | 220 mx.google.com ESMTP ffacd0b85a97d-48351e5704esi145859f8f.261 - gsmtp
>> | ^C
>> | % nc mx3.smtp.goog 25 -v
>> | Connection to mx3.smtp.goog (2001:4860:4802:36::97) 25 port [tcp/smtp]
>> succeeded!
>> | 220 mx.google.com ESMTP ffacd0b85a97d-482fbb550b4si3737625f8f.481 - gsmtp
>> | ^C
>> | % nc mx4.smtp.goog 25 -v
>> | Connection to mx4.smtp.goog (2001:4860:4802:38::97) 25 port [tcp/smtp]
>> succeeded!
>> | 220 mx.google.com ESMTP ffacd0b85a97d-483497c99ccsi173417f8f.479 - gsmtp
>> | ^C
>>
>> Bastian
>>
>> --
>> Ahead warp factor one, Mr. Sulu.
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