SOLVED Can't receive emails from gmail

Hello,

Recently, the following issue has been occurred on one of my servers:

I can't receive emails from gmail, but I can send (from yahoo, office 365 or other private domains i can receive and send).

This problem has been occurred about last week and till now I didn't find a solution.

Bounce back email (from gmail) looks like this and came after 48 hours in gmail account:

Delivery incomplete
There was a temporary problem delivering your message to LEARN MORE

The response was:

The recipient server did not accept our requests to connect. Learn more at Fix bounced or rejected emails - Gmail Help [domain.tld. xxx.xxx.209.9: timed out]

Final-Recipient: rfc822; test_domain@domain.tld
Action: delayed
Status: 4.4.1
Diagnostic-Code: smtp; The recipient server did not accept our requests to connect. Learn more at Fix bounced or rejected emails - Gmail Help
[domain.tld. xxx.xxx.209.9: timed out]
Last-Attempt-Date: Tue, 19 Jun 2018 06:20:15 -0700 (PDT)
Will-Retry-Until: Thu, 21 Jun 2018 05:37:01 -0700 (PDT)


What I've already searched/tried:

a). SMTP Status Code 4.1.1 – Email address does not exist. -> the email address exist

b). Reading google advice at: Fix bounced or rejected emails - Gmail Help

1. Check for these common mistakes in the email address you're sending to:
   • Quotation marks
   • Dots at the end of the address
   • Spaces before or after an address
   • Spelling errors
2. Search your contacts for a different address the same person uses

Checked all of the above points and all of them are OK

c). Checked WHM » Email » Mail Delivery Reports -> there are NO reports
from here: can not receive email from gmail

d). Checked maillog and old maillogs (maillog-20180617, etc.) -> there are NO records for that gmail address.

e). Checked exim_mainlog and old mainlogs (exim_mainlog-20180617.gz) -> there are NO records for that gmail address.

f). Checked exim_rejectlog and old rejectlogs (exim_rejectlog-exim_rejectlog) -> there are NO records for that gmail address.

g). telnet ip 25 -> connected without any issues

h). running /scripts/mailperm username -> no perm issues (can't receive any emails from gmail)

i). I've also checked the following things from this post:
I can send but cannot receive e-mails
Without any luck, all of them are OK.

j). This thread pushed me to write on cPanel forum (in lack of any other ideas): Google Groups


Server config:
Centos 6 with CloudLinux 6.9 on it
WHM v70.0.48


If you have any other ideas, feel free to reply.

Thanks a lot.

 

Hi,

Yes, I'm using CSF but same csf.conf/allow/deny files I have on other 32 servers and there I don't have this issue.

Also in lfd.log I didn't find anything, beside that I've put in csf.allow the followings IPs from gmail:

173.194.76.26
74.125.195.27
108.177.14.27
172.217.194.27
108.177.125.27

Thanks,

 

Hello,

@Michael -> I'll not make a support ticket, below you'll find the reason

@keat63 -> I didn't think before to post here to disable CSF ... with CSF disabled, emails (from gmail) are coming through.

I've compared csf.conf from this server with another csf.conf from another server and files are the same and I took the decision to whitelist google ips.

What I've done to working again, I've searched:

host smtp.gmail.com
host mail.gmail.com
host gmail.com
host google.com
host aspmx.l.google.com

Took the IP classes from google and added into csf.allow and now everything it's OK.

And reassured that in csf.conf port range 30000:50000 is set, because I've saw in exim log what ranges of ports are used (H=mail-wr0-f173.google.com [209.85.128.173]:46928).

Thanks a lot for help!