Sudden Server Error in Mail: cannot SEND messages

[WirelessInn]

Greetings,
I seem to go thru all sorts of unexpected glitches with my new MBP. A few Safari misfirings already, and now, a Server Error in Mail.
See attached illustrations.
Everything was working fine yesterday: error started to appear today.
Any advice? Any will be highly welcome.
Thanks in advance.
- Roger T

 

[iHerzeleid]

Change your port to 587 and it should work.

 

[WirelessInn]

Change your port to 587 and it should work.

Thanks for the prompt reply, iHerzeleid. I did the change, and now I get a new Mail receive error - with port 587 mentioned.
Also, I realize I am getting a RECEIVE error - see attached screen print about port 143!!

I actually do not plan to have Mail as my main business mail resource seems a little flaky anyhow, unless i am doing something wrong, but WHAT? - back to OutlokkExpress for now!), but I want to use it for my .Mac account.

Thanks again for your attention to this matter!

- Roger T

 

[Gee]

It could be that your ISP is blocking access to SMTP servers that are not its own. Mine does. When I'm home, I use smtp.myisp.com and on the road I switch to smtp.mac.com. Do you have the details of your ISP's mail servers?