nanog mailing list archives
Re: ISP port blocking practice
From: Joe Maimon <jmaimon () ttec com>
Date: Thu, 22 Oct 2009 21:41:25 -0400
Justin Shore wrote:
The vast majority, I'm sorry to say, used Microsoft Exchange which to the best of my knowledge doesn't support RFC2476.
You can configure exchange to use additional smtp virtual servers and bind them to specific ports. You can also require authentication to access the ports and you can restrict it to users. You can also enable it for STARTTLS.
What I dont know is whether Exchange has or ever will support SMTPS which is strange considering many versions of outlook default to try that for any secured port other than 25.
I wish more people would use it though. My users wouldn't have cause to get so upset when I tell them that they have to pay monthly for a static IP to use tcp/25. It would reduce my hassles a wee bit.
I have many a time recommended consulting customers to follow up with their mail provider to see if they has any plans to support the rfc standard, but I dont share much enthusiasm for complete adoption. I do believe it is getting better.
Justin
Current thread:
- Re: ISP port blocking practice, (continued)
- Re: ISP port blocking practice Valdis . Kletnieks (Oct 22)
- Re: ISP port blocking practice Ricky Beam (Oct 22)
- Re: ISP port blocking practice Justin Shore (Oct 22)
- Re: ISP port blocking practice Lyndon Nerenberg (VE6BBM/VE7TFX) (Oct 22)
- Re: ISP port blocking practice Sean Donelan (Oct 22)
- Re: ISP port blocking practice Joe Maimon (Oct 22)
- Re: ISP port blocking practice Steve Bertrand (Oct 22)
- Re: ISP port blocking practice Lyndon Nerenberg (VE6BBM/VE7TFX) (Oct 23)
- Re: ISP port blocking practice Chris Boyd (Oct 23)
- Re: ISP port blocking practice Lyndon Nerenberg (VE6BBM/VE7TFX) (Oct 22)
- Re: ISP port blocking practice Justin Shore (Oct 22)
- Re: ISP port blocking practice Joe Maimon (Oct 22)
- Re: ISP port blocking practice Justin Shore (Oct 22)
- Re: ISP port blocking practice Scott Howard (Oct 22)
- Re: ISP port blocking practice Owen DeLong (Oct 22)
- Re: ISP port blocking practice Chris Boyd (Oct 23)
- Re: ISP port blocking practice Jack Bates (Oct 23)
- Re: ISP port blocking practice Steve Bertrand (Oct 23)
- Re: ISP port blocking practice Michael Peddemors (Oct 23)
- Re: ISP port blocking practice Steve Bertrand (Oct 23)
- Re: ISP port blocking practice JC Dill (Oct 24)