Ben,
See replies below.
On 9/24/2013 6:32 AM, Ben Stover wrote:
Assume I want to connect from my local email client to two (!) remote email
servers
The corresponding instructions in .conf file looks like (my guess):
[smtps-firstacct]
accept = 127.0.0.1:259
connect = smtps.myisp1.com:465
[smtps-secondacct]
accept = 127.0.0.1:259
connect = smtps.myisp2.com:465
Questions:
1.) a configuration like above with the same "accept" port 259 is NOT possible
because
stunnel does not know to which remote email server he has to connect.
To distinguish two different remote email server I always have to select TWO
different accept-ports like
[smtps-firstacct]
accept = 127.0.0.1:259
connect = smtps.myisp1.com:465
[smtps-secondacct]
accept = 127.0.0.1:258
connect = smtps.myisp2.com:465
Correct?
Yes, you want to use different ports in the two service sections.
2.) Can I use arbitrary accept-ports like 1242 or 23199 or is there a port
range from I have to select one?
You should be able to use any port you wish provided it doesn't produce
a conflict on your system.
3.) Moreover assume I want to make the SSL connection transparent can I select
an accept-port 25?
What do you mean by "transparent"? Selecting port 25 in and of itself
isn't important, although it may be convenient
in some circumstances since many SMTP in some clients is provisioned for
port 25 by default. If you wish to use port 25,
there is nothing to prevent you from doing so.
4.) I read somewhere that I have always to specify in email client for
POP3/SMTP an address
127.0.0.1:9999
and NOT
127.0.0.1:259
in order to connect to local stunnel service. Because local stunnel service is
always listening on port 9999.
Is this correct?
No. Stunnel will listen wherever you tell it to listen. There is
nothing magic about port 9999.
Thank you
Ben
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