Issue Connection Timed Out Mail

[Chrisp]

Server operating system version

Ubuntu 20.04.6 LTS

Plesk version and microupdate number

18.0.63 = #4

Hi having issues with send out email to certain doamins.

icloud.com
me.com
yahoo.com

Error message =

connect to mx01.mail.icloud.com[17.57.155.25]:25: Connection timed out

They then just sit in the mail queue as deferred. All the rest of email domains go out.

Any ideas of what we could check?

Thanks

 

[Maarten]

The IP address of your server is probably blocked by iCloud etc.
You can check the IP address using these:

Email Blacklist Check - IP Blacklist Check - See if your server is blacklisted

mxtoolbox.com

https://whatismyipaddress.com/blacklist-check

 

[Chrisp]

Thanks I'll check these out.

 

[scsa20]

If your IP is black listed, you would had gotten a bounce back. Since you're getting a connection timed out this is telling me that whoever is hosting your server has outbound port 25 blocked. You would need to reach out to the hosting provider and ask them to unblock port 25.

 

[Chrisp]

If your IP is black listed, you would had gotten a bounce back. Since you're getting a connection timed out this is telling me that whoever is hosting your server has outbound port 25 blocked. You would need to reach out to the hosting provider and ask them to unblock port 25.

Wouldn't this affect all email going out and not just some domains?

 

[scsa20]

Depends on different factors but connection time is usually always because the port isn't open as I've mention before if it was black listed you would had gotten a bounce back stating as such.

 

[Chrisp]

Depends on different factors but connection time is usually always because the port isn't open as I've mention before if it was black listed you would had gotten a bounce back stating as such.

Thanks I'll get it checked.