CrowdSec•3w ago

The recipient server did not accept our requests to connect.mails from gmail blocked by crowdsec

The recipient server did not accept our requests to connect. I have no idea why mails from gmail are blocked. I am able to send to gmail without any problem, but the othe way doesn't work. How can I allow incoming mail from gmail smtp servers ?

3 Replies

CrowdSec•3w ago

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iiamloz•2w ago

Do you have any debug information to indicate which IP and how it links to CrowdSec? cause the only range we have known is https://app.crowdsec.net/cti?q=ip_range_24%3A%22108.177.16.0%2F24%22&page=1 from their blog post https://support.google.com/a/answer/60764?hl=en

CrowdSec Console

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Leverage Cyber Threat Intelligence (CTI) on CrowdSec Console to enhance your security strategies. Gain actionable insights to defend against emerging threats.

Google IP address ranges for outbound mail servers - Google Workspa...

When setting up email for your domain, you might need the IP addresses for Google Workspace mail servers. For example, SPF authentication for your domain might require Google server IP

iiamloz•2w ago

also I grabbed all of google spf records to check them here the list

74.125.0.0/16
173.194.0.0/16
209.85.128.0/17
216.58.192.0/19
216.239.32.0/19
2001:4860:4000::/36
2404:6800:4000::/36
2607:f8b0:4000::/36
2800:3f0:4000::/36
2a00:1450:4000::/36
2c0f:fb50:4000::/36
172.217.0.0/19
172.217.32.0/20
172.217.128.0/19
172.217.160.0/20
172.217.192.0/19
172.253.56.0/21
172.253.112.0/20
108.177.96.0/20

74.125.0.0/16
173.194.0.0/16
209.85.128.0/17
216.58.192.0/19
216.239.32.0/19
2001:4860:4000::/36
2404:6800:4000::/36
2607:f8b0:4000::/36
2800:3f0:4000::/36
2a00:1450:4000::/36
2c0f:fb50:4000::/36
172.217.0.0/19
172.217.32.0/20
172.217.128.0/19
172.217.160.0/20
172.217.192.0/19
172.253.56.0/21
172.253.112.0/20
108.177.96.0/20

🌟 Top Reputation
Known 1191 (90%) Safe 74 (6%) Suspicious 57 (4%) Unknown 0 (0%) 🗂️ Top Classifications
SEO crawler 74 (6%) 🤖 Top Behaviors
SMTP spam 742 (56%) Scan attempt 417 (32%) TCP Scan 265 (20%) HTTP Scan 83 (6%) Exploitation attempt 30 (2%) ⛔ Top Blocklists
Targeted Country: Germany 15 (1%) High Background Noise 2 (0%) Healthcare Attackers 1 (0%) Hosting Services Attackers 1 (0%) IT and Services Attackers 1 (0%) 🌐 Top IP Ranges
209.85.128.0/17 823 (62%) 172.217.32.0/20 211 (16%) 173.194.0.0/16 191 (14%) 172.217.0.0/19 66 (5%) 216.58.192.0/19 31 (2%) 📡 Top Autonomous Systems
GOOGLE 1322 (100%) unknown 0 (0%) 🌎 Top Countries
US :us: 1081 (82%) NL :flag-nl: 78 (6%) DE :de: 52 (4%) SG :flag-sg: 27 (2%) FI :flag-fi: 24 (2%)

Gaming

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The recipient server did not accept our requests to connect.mails from gmail blocked by crowdsec

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