On Tuesday 07 April 2009 11:01:52 Oleg Goldshmidt wrote: > Aviram Jenik <avi...@jenik.com> writes: > > Noam didn't say blocking port 25 for everyone is a good thing or > > that he likes it - just that this is what ISPs in Europe and the US > > are doing that to fight spam. > > Not in my experience. That is, unless I grossly misunderstand the > problem. In my mind, this means that the problem occurs when you > configure a foreign server as your SMART_HOST while connected to the > "octal 11" Israeli ISP.
[...] > I have just returned from a trip to Europe. I sent emails, using my > laptop, from two different Western European countries, from a hotel, > from coffee shops, from occasional unidentified public Wi-Fi spot, > etc You just got lucky. Some ISPs will only block you after a number of outgoing port 25 connections to different IPs. Others block outgoing 25 completely. Try and remove the SMART_HOST to have sendmail send emails directly (as the Internet was built to allow) and revisit those ISPs. You'll probably be blocked. Leave SMART_HOST in and try a few more ISPs in Western Europe and the US and you will probably get blocked. See for example: http://www.postcastserver.com/help/Port_25_Blocking.aspx > > In general, this does not make much sense. Imagine a typical > Windows/Outlook user who has his "outgoing mail server" (SMART_HOST > equivalent) configured to something (by his company's IT people, he > himself does not know what an "outgoing mail server" is, > etc.). Imagine this person on a trip somewhere - he does not change > his configuration, but he doesn't normally have any problems sending > email. > > If the "octal 11" Israeli ISP does it it is *not* following any common > practice. Oh, and I agree it is stupid, as is blacklisting. No argument there. It is incredibly stupid, but unfortunately unpreventable due to the sheer number of moron blacklisting services. - Aviram _______________________________________________ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
