Re: Smarthost

On Jul 31, 1:50 pm, Grant Taylor <gtay...@xxxxxxxxxxxxxxxxx> wrote:
On 07/31/07 12:42, LMM wrote:

Thanks Grant for your answer, I know the cf configuration is trivial.

You are welcome.

But what`s happen with the mail headers? Are they show all the mail
routing information? Is not necesary to masquerade them? I ask
because, I listen that some mail filters do not like smarthosting.

I'm not going to say that there are not filters out there that are picky
about headers. However, per accepted internet standard, there is
nothing (that I'm aware of) that should cause any problems with the
addition of extra Received: headers so long as they are valid and in
chronological order. I personally am running a filter that wants the
dates to be logical as in no big jumps backwards in time (time zones are
taken in to account) of say more than a day or so. In short as long as
things are logical and not obviously a spoof, things should be fine.

Long ago, I read about a modification that could be done to Sendmail's
source code to cause Sendmail (8.11 / 8.12) to remove any Received:
header previously in a message. The intent was to hide the internal
message routing structure from the rest of the world. If you would like
I'll try to dig that code back up, but I have never gotten it to work.
The theory was simple enough, but the directions are so far out of date
that they do not directly apply to a current version of Sendmail (8.13).

Subscribe to a mailing list of sorts and look at the headers of the
message(s) that you receive. You should find that there are multiple
servers listed. I'd be willing to bet there is at least three or four
sets of Received: headers, one for the original posters sending server,
one for the mailing list receiving server, possibly one for the mailing
lists sending server, and finally one for your receiving server.

Grant. . . .

Thanks Grant, I think I can implement now.

Lorenzo

.

Relevant Pages

  • Re: Help please. Outlook express or comcast is creating misleading mail headers
    ... and go down to the "Outgoing Mail Server" section. ... > headers, but the smtp mail host that comcast uses now includes that in all ... MTA, and the aosake.net MX. ... that the filters are working for. ...
    (microsoft.public.windows.inetexplorer.ie6_outlookexpress)
  • Re: Smarthost
    ... I'm not going to say that there are not filters out there that are picky about headers. ... However, per accepted internet standard, there is nothing that should cause any problems with the addition of extra Received: headers so long as they are valid and in chronological order. ... I'd be willing to bet there is at least three or four sets of Received: headers, one for the original posters sending server, one for the mailing list receiving server, possibly one for the mailing lists sending server, and finally one for your receiving server. ...
    (comp.mail.sendmail)
  • Re: Attack on ASP
    ... Try a newsreader like Dialog and use the filters. ... I am on that same server (check my headers;-) and I did get to see them if ...
    (alt.smokers.pipes)
  • Re: Killfiles [was Re: Phony advice by Purl Gurl [was: Re: HOW LONG questions]]
    ... fetched from the server. ... when I started re-reading aue just ... recently, I fetched nearly 12,000 headers. ... For mail, at least, Thunderbird has a menu item labeled "Run filters on ...
    (alt.usage.english)
  • Re: Problem Updating New Messages from NTTP News Server OE
    ... > as far as I know and he doesn't have a server in his setup. ... download the answer to a problem he had posted in the Outlook group and I had seen the answer almost immediately on July 1. ... sure how taking the check out of the download headers boxes would have helped. ... pane 3) Get headers at a time 4) No check in mark all messages as read when exiting newsgroup ...
    (microsoft.public.windows.inetexplorer.ie6_outlookexpress)
Loading