CentOS - Nov 2019 - sendmail on Centos 7.7

On Fri, 2019-11-22 at 10:55 -0500, Stephen John Smoogen wrote:
> [smooge at smoogen-laptop ~]$ host -t MX smtp-relay.gmail.com.com
> smtp-relay.gmail.com.com mail is handled by 10 mx203.inbound-mx.org.
> smtp-relay.gmail.com.com mail is handled by 10 mx203.inbound-mx.net.
.w smtp-relay.gmail.com.com

smtp-relay.gmail.com.com has address 79.124.78.105
smtp-relay.gmail.com.com has address 79.124.78.101
smtp-relay.gmail.com.com mail is handled by 10 mx203.inbound-mx.net.
smtp-relay.gmail.com.com mail is handled by 10 mx203.inbound-mx.org.


inetnum:        79.124.78.0 - 79.124.78.255
descr:          BlueAngelHost Pvt. Ltd
country:        BG => Bulgaria

created:        2016-02-17T14:40:17Z
last-modified:  2018-07-17T00:58:15Z
source:         RIPE

org-name:       BlueAngelHost Pvt. Ltd
org-type:       OTHER
person:         David John
address:        house 173. street, 4, E-block, ferozpur Road, Lahore,
Pakistan
phone:          +14074597822 => "407 is principally Orlando,
Florida."

Looks dodgy !

and, of course...

$ host smtp-relay.gmail.com
smtp-relay.gmail.com has address 74.125.142.28
smtp-relay.gmail.com has IPv6 address 2607:f8b0:400e:c08::1c
$ whois 74.125.142.28
...

NetRange:       74.125.0.0 - 74.125.255.255
CIDR:           74.125.0.0/16
NetName:        GOOGLE
NetHandle:      NET-74-125-0-0-1
Parent:         NET74 (NET-74-0-0-0-0)
NetType:        Direct Allocation
OriginAS:
Organization:   Google LLC (GOGL)
RegDate:        2007-03-13
Updated:        2012-02-24
Ref:            https://rdap.arin.net/registry/ip/74.125.0.0
....

On Fri, 2019-11-22 at 12:20 -0800, John Pierce wrote:
> and, of course...
> 
> $ host smtp-relay.gmail.com

but ...

the originator referred to smtp-relay.gmail.com.com (note the double
"com")