Emails Not Delivering using EXIM

Using CENTOS 7.8 kvm, Exim 4 [CODE=rich]telnet gmail-smtp-in.l.google.com 25 Trying 173.194.205.27... telnet: connect to address 173.194.205.27: Connection timed out Trying 2607:f8b0:400d:c02::1a... telnet: connect to address 2607:f8b0:400d:c02::1a: Connection timed out
Error: Connecting to gmail-smtp-in.l.google.com [173.194.205.27]:25 ... failed: Connection timed out (timeout=5m)

traceroute -n -T -p 25 gmail-smtp-in.l.google.com
traceroute to gmail-smtp-in.l.google.com (173.194.205.27), 30 hops max, 52 byte packets
 1  10.198.75.252  0.450 ms  0.416 ms  0.407 ms
 2  10.243.128.110  0.385 ms  0.394 ms 10.243.128.114  0.360 ms
 3  10.243.128.50  0.347 ms 10.243.128.62  0.317 ms  0.312 ms
 4  10.243.128.8  0.326 ms 10.243.128.12  0.329 ms 10.243.128.8  0.310 ms
 5  10.240.88.30  0.259 ms  0.250 ms 10.240.88.34  0.265 ms
 6  * * *
 7  * * *
 8  * * *
 9  * * *
10  * * *
11  * * *
12  * * *
13  * * *
14  * * *
15  * * *
16  * * *
17  * * *
18  * * *
19  * * *
20  * * *
21  * * *
22  * * *
23  * * *
24  * * *
25  * * *
26  * * *
27  * * *
28  * * *
29  * * *
30  * * *

cat /etc/resolv.conf
; Created by cloud-init on instance boot automatically, do not edit.
;
# Generated by NetworkManager
nameserver 198.12.255.125
nameserver 198.71.232.2

cPAdminsMichael

July 28, 2020 19:20

Hm - something looks wrong with the ip address that is resolved by your DNS servers (or /etc/hosts file) 173.194.205.27 points to qm-in-f27.1e100.net and gmail-smtp-in.l.google.com should point to 108.177.127.26

pavan2reach

July 28, 2020 19:28

Hi Micheal, My /etc/hosts file

127.0.0.1               localhost #cloud-controlled; do not change
127.0.0.1               localhost localhost.localdomain localhost4 localhost4.localdomain4
::1             localhost localhost.localdomain localhost6 localhost6.localdomain6
198.xx.xxx.xxx          ip-198-xx-xxx-xxx.ip.secureserver.net ip-198-xx-xxx-xxx exxxxxxt8.secureserver.net exxxxxxx8

July 28, 2020 21:00

My bad. Seems as 173.194.205.27 is indeed pointing to Google MX. Must be a regional thing. I can also telnet to port 25 from here, so it must be a firewall blocking the connection. Do you have outgoing SMTP/TCP25 blocked maybe? Is Google MX the only server you have issue with?

cPanelLauren

July 29, 2020 00:47

Since that never seems to leave the internal network (10.0.0.0 - 10.255.255.255) are you sure that port 25 is open? Some providers block outbound mail on port 25 and to workaround this in most cases can to go to WHM>>Service Configuration>>Service Manager -> Exim Mail Server (on another port) and check both boxes as well as enter in port 26

Emails Not Delivering using EXIM

Comments

Didn't find what you were looking for?