• Introducing WebPros Cloud - a fully managed infrastructure platform purpose-built to simplify the deployment of WebPros products !  WebPros Cloud enables you to easily deliver WebPros solutions — without the complexity of managing the infrastructure.
    Join the pilot program today!
  • Support for BIND DNS has been removed from Plesk for Windows due to security and maintenance risks.
    If a Plesk for Windows server is still using BIND, the upgrade to Plesk Obsidian 18.0.70 will be unavailable until the administrator switches the DNS server to Microsoft DNS.

Issue Mail Server Cannot Send to Yahoo but Can Receive Emails - 4.4.1 deferred (connect to mta5.am0.yahoodns.net[67.195.228.111]:25: Connection timed out)

vin_12

New Pleskian
Server operating system version
CentOS 7.9.2009 x86_64
Plesk version and microupdate number
Plesk Obsidian 18.0.65.2
The error message on the maillog 4.4.1 deferred (connect to mta5.am0.yahoodns.net[67.195.228.111]:25: Connection timed out)
 

Attachments

  • Yahoo email deferred.png
    Yahoo email deferred.png
    93.6 KB · Views: 10
We are hosting the service, and we have verified that port 25 is not blocked as it is a common port for SMTP. Port 25 is open by default, and an allow rule for the firewall on port 25 is already in place.

We tested the connection using telnet, and while it successfully connects, the connection is immediately closed.

Command used: telnet mta6.am0.yahoodns.net 25

Result:

[root@ourdomain~]# telnet mta6.am0.yahoodns.net 25
Trying 67.195.204.72...
Connected to mta6.am0.yahoodns.net.
Escape character is '^]'.
220 mtaproxy305.free.mail.bf1.yahoo.com ESMTP ready
Connection closed by foreign host.
 
Back
Top