[Evolution] I don't understand evolution's use of ports
- From: Leonard Evens <le335160 gmail com>
- To: evolution-list gnome org
- Subject: [Evolution] I don't understand evolution's use of ports
- Date: Sat, 13 Aug 2011 18:52:04 -0500
I was having enormous trouble configuring evolution on my Fedora 14
system to use smtp.gmail.com as an outgoing mail server. I switched to
using comcast, and that worked fine. But I then went back and checked
and found I had put
smtp.comcast.net
instead of
smtp.comcast.net:587
When I added the ':587', then the comcast server stopped working.
I then checked the gmail server and found I had added ':587'. I then
deleted it, and the gmail server started working.
Let me explain. Originally, everyone by default used port 25. But
ISPs, including comcast, my ISP, started blocking outpu t using prot 25
because spammers were using it. My outgoing email got blocked as a
result.To fix it, I had to configure the server I was using to accept
port 587 and then I had to set the server name to be
smtp:xxx,xxx,xxx:587
and that is still the way my evolution account for that server is set
up. And it still works.
Now I think that comcast's server will not accept port 25, so it must be
using 587. Similarly for the gmail server. So why does adding that
':587' stop outgoing mail from working?
I find this very mysterious.
Can anyone explain what is going on, and/or refer me to a document whih
clarifies the matter?
--
Leonard Evens len math northwestern edu
Professor Emeritus, Department of Mathematics, Northwestern University
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