Nmap scan report for alt2.gmr-smtp-in.l.google.com (142.250.152.14) Host is up (0.046s latency). Other addresses for alt2.gmr-smtp-in.l.google.com (not scanned): 2607:f8b0:4001:c56::e rDNS record for 142.250.152.14: ia-in-f14.1e100.net Not shown: 999 filtered ports PORT STATE SERVICE VERSION 25/tcp open smtp | fingerprint-strings: | GenericLines: | 220 gmr-mx.google.com ESMTP bn10-20020a056e02338a00b0035aeaed6368si1066550ilb.0 - gsmtp | GetRequest: | 220 gmr-mx.google.com ESMTP c13-20020a170902848d00b001ca2e935df2si293123plo.10 - gsmtp | 502-5.5.1 Unrecognized command. Please visit | 5.5.1 https://support.google.com/a/answer/3221692 for more information. c13-20020a170902848d00b001ca2e935df2si293123plo.10 - gsmtp | Hello: | 220 gmr-mx.google.com ESMTP z18-20020a056638241200b0046658318eabsi172551jat.5 - gsmtp | 501-5.5.4 Empty HELO/EHLO argument not allowed, closing connection. | 5.5.4 https://support.google.com/mail/?p=helo z18-20020a056638241200b0046658318eabsi172551jat.5 - gsmtp | Help: | 220 gmr-mx.google.com ESMTP l31-20020a056122201f00b004abd0f58a5esi539140vkd.2 - gsmtp | 2.0.0 https://www.google.com/search?btnI&q=RFC+5321 l31-20020a056122201f00b004abd0f58a5esi539140vkd.2 - gsmtp | NULL: |_ 220 gmr-mx.google.com ESMTP z18-20020a056638241200b0046658318eabsi172551jat.5 - gsmtp | smtp-commands: gmr-mx.google.com at your service, [208.76.253.234], SIZE 52428800, 8BITMIME, STARTTLS, ENHANCEDSTATUSCODES, PIPELINING, CHUNKING, SMTPUTF8, |_ 2.0.0 https://www.google.com/search?btnI&q=RFC+5321 e9-20020a05620a12c900b0077576de1665si396578qkl.3 - gsmtp | ssl-cert: Subject: commonName=mx.google.com | Subject Alternative Name: DNS:mx.google.com, DNS:smtp.google.com, DNS:aspmx.l.google.com, DNS:alt1.aspmx.l.google.com, DNS:alt2.aspmx.l.google.com, DNS:alt3.aspmx.l.google.com, DNS:alt4.aspmx.l.google.com, DNS:gmail-smtp-in.l.google.com, DNS:alt1.gmail-smtp-in.l.google.com, DNS:alt2.gmail-smtp-in.l.google.com, DNS:alt3.gmail-smtp-in.l.google.com, DNS:alt4.gmail-smtp-in.l.google.com, DNS:gmr-smtp-in.l.google.com, DNS:alt1.gmr-smtp-in.l.google.com, DNS:alt2.gmr-smtp-in.l.google.com, DNS:alt3.gmr-smtp-in.l.google.com, DNS:alt4.gmr-smtp-in.l.google.com, DNS:mx1.smtp.goog, DNS:mx2.smtp.goog, DNS:mx3.smtp.goog, DNS:mx4.smtp.goog, DNS:aspmx2.googlemail.com, DNS:aspmx3.googlemail.com, DNS:aspmx4.googlemail.com, DNS:aspmx5.googlemail.com, DNS:gmr-mx.google.com | Not valid before: 2023-10-23T11:23:56 |_Not valid after: 2024-01-15T11:23:55 |_ssl-date: 2023-11-20T12:53:56+00:00; +1s from scanner time. 1 service unrecognized despite returning data. If you know the service/version, please submit the following fingerprint at https://nmap.org/cgi-bin/submit.cgi?new-service : SF-Port25-TCP:V=7.70%I=7%D=11/20%Time=655B56BD%P=x86_64-redhat-linux-gnu%r SF:(NULL,57,"220\x20gmr-mx\.google\.com\x20ESMTP\x20z18-20020a056638241200 SF:b0046658318eabsi172551jat\.5\x20-\x20gsmtp\r\n")%r(Hello,10A,"220\x20gm SF:r-mx\.google\.com\x20ESMTP\x20z18-20020a056638241200b0046658318eabsi172 SF:551jat\.5\x20-\x20gsmtp\r\n501-5\.5\.4\x20Empty\x20HELO/EHLO\x20argumen SF:t\x20not\x20allowed,\x20closing\x20connection\.\r\n501\x205\.5\.4\x20\x SF:20https://support\.google\.com/mail/\?p=helo\x20z18-20020a056638241200b SF:0046658318eabsi172551jat\.5\x20-\x20gsmtp\r\n")%r(Help,CB,"220\x20gmr-m SF:x\.google\.com\x20ESMTP\x20l31-20020a056122201f00b004abd0f58a5esi539140 SF:vkd\.2\x20-\x20gsmtp\r\n214\x202\.0\.0\x20\x20https://www\.google\.com/ SF:search\?btnI&q=RFC\+5321\x20l31-20020a056122201f00b004abd0f58a5esi53914 SF:0vkd\.2\x20-\x20gsmtp\r\n")%r(GenericLines,59,"220\x20gmr-mx\.google\.c SF:om\x20ESMTP\x20bn10-20020a056e02338a00b0035aeaed6368si1066550ilb\.0\x20 SF:-\x20gsmtp\r\n")%r(GetRequest,10F,"220\x20gmr-mx\.google\.com\x20ESMTP\ SF:x20c13-20020a170902848d00b001ca2e935df2si293123plo\.10\x20-\x20gsmtp\r\ SF:n502-5\.5\.1\x20Unrecognized\x20command\.\x20Please\x20visit\r\n502\x20 SF:5\.5\.1\x20\x20https://support\.google\.com/a/answer/3221692\x20for\x20 SF:more\x20information\.\x20c13-20020a170902848d00b001ca2e935df2si293123pl SF:o\.10\x20-\x20gsmtp\r\n"); Warning: OSScan results may be unreliable because we could not find at least 1 open and 1 closed port OS fingerprint not ideal because: Missing a closed TCP port so results incomplete No OS matches for host Network Distance: 23 hops TRACEROUTE (using port 25/tcp) HOP RTT ADDRESS 1 0.19 ms 208.76.251.177 2 0.56 ms gw.mcom-colocationamerica.com (208.64.231.81) 3 0.89 ms multacom.com (96.45.162.9) 4 0.36 ms google.as15169.any2ix.coresite.com (206.72.210.41) 5 0.61 ms 108.170.247.212 6 1.08 ms 108.170.234.15 7 8.24 ms 142.250.238.76 8 15.17 ms 142.250.238.29 9 51.36 ms 192.178.74.246 10 46.91 ms 192.178.45.209 11 45.77 ms 142.250.239.159 12 ... 22 23 46.48 ms ia-in-f14.1e100.net (142.250.152.14) OS and Service detection performed. Please report any incorrect results at https://nmap.org/submit/ . Nmap done: 1 IP address (1 host up) scanned in 52.79 seconds