The solutions are given above.
Check you have the correct host, port and security policy and click on Save & Close when done.
Then, as a test, completely disable any anti-virus, firewall, proxy or VPN, then try send again.
Sometimes even restarting your router may resolve this.
am also having this same problem. Have ensured have got the port and servers details that @Gary has highlighted above. Have turned off all virus/firewall software (in fact uninstalled anything that could interfere). Have removed the permissions in my Microsoft account and done a fresh install. Have changed my password on Outlook.com and then tried a fresh account add. Nothing above has worked. Only started happening in last 2/3 days. Oh and have restarted my router as well. Any other solution?
I had a similar issue after trying to send a mail through a hotspot connection. Receiving the pop mail worked fine but connecting to the smtp server failed.
Changing the port and security settings manually also made no difference. However it worked fine after letting eM Client find the correct settings automatically!
Go to the Diagnostics tab and run the diagnostics test. When it fails, you get the ‘Fix’ option. This will check some ports and choose the successful one
Great option, just strange that it fixes what a similar manual setting does not fix.
I’m having this problem also. Several times a day, I have to run the diagnostic, so EM Client can find the right settings and verify them before I can send and receive mail. I don’t know why, if it verifies the settings and things work for 30 seconds, it can’t just save those settings. Why does it forget them? Having to run a diagnostic to send and receive email several times per day is adding several minutes of wasted time (sorry, but it’s true).
It’s especially sticky with the SMTP. I am using a different cable provider (not Centurylink) and though I see instructions to disable antivirus protection (Norton), I’m not going to, because I have to use antivirus all the time anyway. Shouldn’t this email software work without having to disable antivirus protection?
Thank you for your help.
Thank you Gary!
My ISP, Spectrum/Charter, was NO HELP whatsoever. I was using Port = “587 Use SSL/TLS on special port (legacy)” and Outgoing kept failing (Incoming no problem) changing to your phrasing “Port 587 = Force usage of SSL/TLS” fix it. Maybe I’m stupid but I thought the verbiage was just a comment, apparently not.
