Re: [courier-users] Spam black hole?
This is a discussion on Re: [courier-users] Spam black hole? within the Courier-Imap forums, part of the Mail Servers and Related category; --Apple-Mail-4--142277876 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed On ...
|
|||||||
| FAQ | Members List | Calendar | Search | Today's Posts | Mark Forums Read |
06-03-2005
|
|||
|
|||
Re: [courier-users] Spam black hole?
--Apple-Mail-4--142277876 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed On Jun 2, 2005, at 6:57 AM, Bill Taroli wrote: > > I learned recently that my employer's IT organization has decided > it best for the MX to process all mail as if it were successful > even when it's final disposition isn't. It neither returns 5xx > (such as on bad address) nor do the subsequent MTA's and MDA's > generate DSN's. Is this acceptable, or even suggested, practice? I suppose that depends on what your goals are. Personally, I think hiding the fate of accepted mail is detrimental to communications. Additionally, as dictionaries containing all of your invalid addresses become available, you're going to start seeing much higher volumes of incoming mail. This is going to raise the cost of your mail system by consuming more bandwidth, and eventually requiring more hardware just to accept and discard mail. > I'm curious to hear what others are doing in this regard. I actually go out of my way to make sure that we only accept mail for real users. We use an external mail processing system from Sophos (PureMessage, a very good product) which uses Sendmail as a component. I'm able to export a list of valid users and aliases from our private mail system to a virtual user list on the sendmail installation so that the system only accepts mail for those addresses in a configuration which is basically just a mail relay. --Apple-Mail-4--142277876 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=ISO-8859-1 <HTML><BODY style=3D"word-wrap: break-word; -khtml-nbsp-mode: space; = -khtml-line-break: after-white-space; "><DIV><DIV>On Jun 2, 2005, at = 6:57 AM, Bill Taroli wrote:</DIV><BR = class=3D"Apple-interchange-newline"><BLOCKQUOTE type=3D"cite"><DIV = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style=3D"margin-top: = 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">I = learned recently that my employer's IT organization has decided it best = for the MX to process all mail as if it were successful even when it's = final disposition isn't. It neither returns 5xx (such as on bad address) = nor do the subsequent MTA's and MDA's generate DSN's. Is this = acceptable, or even suggested, practice?<BR></DIV></BLOCKQUOTE><DIV><BR = class=3D"khtml-block-placeholder"></DIV><DIV>I suppose that depends on = what your goals are.=A0 Personally, I think hiding the fate of accepted = mail is detrimental to communications.=A0 Additionally, as dictionaries = containing all of your invalid addresses become available, you're going = to start seeing much higher volumes of incoming mail.=A0 This is going = to raise the cost of your mail system by consuming more bandwidth, and = eventually requiring more hardware just to accept and discard = mail.</DIV><DIV><BR class=3D"khtml-block-placeholder"></DIV><BLOCKQUOTE = type=3D"cite"><DIV style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; ">I'm curious to hear what others = are doing in this regard.</DIV></BLOCKQUOTE><BR></DIV><DIV>I actually go = out of my way to make sure that we only accept mail for real users.=A0 = We use an external mail processing system from Sophos (PureMessage, a = very good product) which uses Sendmail as a component.=A0 I'm able to = export a list of valid users and aliases from our private mail system to = a virtual user list on the sendmail installation so that the system only = accepts mail for those addresses in a configuration which is basically = just a mail relay.</DIV><FONT class=3D"Apple-style-span" = color=3D"#0000DD"><BR = class=3D"khtml-block-placeholder"></FONT></BODY></HTML>= --Apple-Mail-4--142277876-- ------------------------------------------------------- This SF.Net email is sponsored by Yahoo. Introducing Yahoo! Search Developer Network - Create apps using Yahoo! Search APIs Find out how you can build Yahoo! directly into your own Applications - visit http://developer.yahoo.net/?fr=offad-ysdn-ostg-q22005 _______________________________________________ courier-users mailing list courier-users@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/.../courier-users 
|
Linear Mode
