nanog mailing list archives
Re: Outgoing SMTP Servers
From: Owen DeLong <owen () delong com>
Date: Tue, 25 Oct 2011 02:35:31 -0700
On Oct 24, 2011, at 10:27 PM, Mikael Abrahamsson wrote:
On Mon, 24 Oct 2011, Dennis Burgess wrote:I am curious about what network operators are doing with outbound SMTP traffic.Block all TCP/25 and require users to use submit with authentication on TCP/587.
If they are using someone else's mail server for outbound, how, exactly do you control whether or not they use AUTH in the process? Further, if you make them use AUTH somehow, but, you don't force TLS, then, you are doing more harm than good IMHO. Owen
Current thread:
- Re: Outgoing SMTP Servers, (continued)
- Re: Outgoing SMTP Servers Bjørn Mork (Oct 25)
- Re: Outgoing SMTP Servers Carlos Martinez-Cagnazzo (Oct 25)
- RE: Outgoing SMTP Servers Dennis Burgess (Oct 25)
- Re: Outgoing SMTP Servers David E. Smith (Oct 25)
- Re: Outgoing SMTP Servers Carlos Martinez-Cagnazzo (Oct 26)
- Re: Outgoing SMTP Servers Randy Bush (Oct 25)
- Re: Outgoing SMTP Servers Bjørn Mork (Oct 25)
- Re: Outgoing SMTP Servers Jeroen van Aart (Oct 25)
- RE: Outgoing SMTP Servers John van Oppen (Oct 26)
- RE: Outgoing SMTP Servers up (Oct 26)
- Re: Outgoing SMTP Servers Owen DeLong (Oct 25)
- Re: Outgoing SMTP Servers Aftab Siddiqui (Oct 25)
- Re: Outgoing SMTP Servers Scott Howard (Oct 26)
- Re: Outgoing SMTP Servers Jeff Kell (Oct 26)
- Re: Outgoing SMTP Servers Dave CROCKER (Oct 25)
- Re: Outgoing SMTP Servers Owen DeLong (Oct 25)
- Re: Outgoing SMTP Servers Jeroen Massar (Oct 25)