[tor-bugs] #30608 [Internal Services/Tor Sysadmin Team]: Have a SMTP out only server

Tor Bug Tracker & Wiki blackhole at torproject.org
Thu May 30 00:30:56 UTC 2019


#30608: Have a SMTP out only server
-------------------------------------------------+---------------------
 Reporter:  dgoulet                              |          Owner:  tpa
     Type:  enhancement                          |         Status:  new
 Priority:  Medium                               |      Milestone:
Component:  Internal Services/Tor Sysadmin Team  |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:                                       |  Actual Points:
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+---------------------

Comment (by mikeperry):

 In a fit of desperation, I set up my mail client to use an SSH
 LocalForward to iranicum as a SMTP server. Preliminary testing indicates
 that my emails aren't going into SPAM folders of MIT and gmail anymore.

 Because I also don't like to connect directly to tor project
 infrastructure from whatever network I happen to be on, I also do this
 over my TBB's Tor SOCKS port.

 Here's a .ssh/config block that does all this:

 {{{
 host iranicum
    Hostname iranicum.torproject.org
    ProxyCommand /usr/bin/nc -X 5 -x 127.0.0.1:9150 %h %p  # Use TBB's Tor
 to get to iranicum
    LocalForward 2525 127.0.0.1:25  # Forward my 2525 to iranicum:25
 }}}

 I then tell my mailclient that when I send mail as my @torproject.org
 address, use 127.0.0.1:2525 with STARTTLS, and no auth. After I run `ssh
 iranicum` and store an exception for the cert, it works.

 No LDAP! Just netcat, duct tape, and bubblegum.

 I'll update this ticket if I notice that any mails fail to go through
 still.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30608#comment:8>
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