I've created records and check them. I only have a few domains, we don't do email forwarding/rewriting, and all our users who need to use SMTP do so through our servers using smtp-auth, but we're pretty small scale in the grand scheme of things.
I'd say it makes little difference to incoming spam as spammers will simply register SPF records for their domains, but it has cut down already of mail coming into our company claiming to be from our addresses. regards, Paul -- Paul Hutchings Network Administrator, MIRA Ltd. Tel: 44 (0)24 7635 5378, Fax: 44 (0)24 7635 8378 mailto:[EMAIL PROTECTED] > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On > Behalf Of Henry, Christopher M. > Sent: 23 August 2004 20:43 > To: Exchange Discussions > Subject: RE: SPF Warning > > How many of you are actually using SPF and does it work? Do > you guys see a decrease of spam coming into your organization? > > > > This communication is intended only for use by the addressee. > It may contain confidential or privileged information. If you > are not the intended recipient, please contact us immediately > and then delete this message from your system. You should not > copy or use it to disclose its contents to any other person. > Thank you. > > > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On > Behalf Of Chris Scharff > Sent: Monday, August 23, 2004 3:31 PM > To: Exchange Discussions > Subject: RE: SPF Warning > > Depends on how you create the entry and how you define hurt. > Even when configured 'properly' it can break existing RFC > compliant behavior by mailers. > > > -----Original Message----- > > From: [EMAIL PROTECTED] [mailto:bounce- > > [EMAIL PROTECTED] On Behalf Of Ed > Crowley [MVP] > > Posted At: Monday, August 23, 2004 2:23 PM Posted To: swynk > > Conversation: SPF Warning > > Subject: RE: SPF Warning > > > > But it's just a DNS entry, no? I can't see that it will hurt > anything, > > will > > it? > > > > Ed Crowley MCSE+Internet MVP > > Freelance E-Mail Philosopher > > Protecting the world from PSTs and Bricked Backups!T > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of > Chris > > Scharff > > Sent: Monday, August 23, 2004 11:46 AM > > To: Exchange Discussions > > Subject: RE: SPF Warning > > > > Because it's an evolving standard? > > > > > -----Original Message----- > > > From: [EMAIL PROTECTED] > [mailto:bounce- > > > [EMAIL PROTECTED] On Behalf Of Ed > Crowley [MVP] > > > > Posted At: Monday, August 23, 2004 1:05 PM Posted To: swynk > > > Conversation: SPF Warning > > > Subject: RE: SPF Warning > > > > > > Why not just do it? > > > > > > Ed Crowley MCSE+Internet MVP > > > Freelance E-Mail Philosopher > > > Protecting the world from PSTs and Bricked Backups!T > > > > > > -----Original Message----- > > > From: [EMAIL PROTECTED] > > > [mailto:[EMAIL PROTECTED] On Behalf Of > > Boyd, > > > Nathan > > > Sent: Monday, August 23, 2004 10:55 AM > > > To: Exchange Discussions > > > Subject: SPF Warning > > > > > > I just ran a DNS report against my domain and according to > > DNSStuff.com > > > all > > > SPF records have to be created by October 1 2004. > > > > > > I noticed an AOL thread last week but I thought this was just for > AOL. > > > Anyone know how serious we should take this October 1 deadline? > > > > > > Nathan > > > > > > WARN SPF record Your domain does not have an SPF > record. This > > means > > > that spammers can easily send out E-mail that looks like it came > from > > your > > > domain, which can make your domain look bad (if the > recipient thinks > > you > > > really sent it), and can cost you money (when people complain to > you, > > > rather than the spammer). You may want to add an SPF record > > > <http://spf.pobox.com/> before October 1, 2004, the > target date for > > > domains to have SPF > > records in > > > place. > > > > > > > > > _________________________________________________________________ > > > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > > > Web Interface: > > > http://intm-dl.sparklist.com/cgi- > > > bin/lyris.pl?enter=exchange&text_mode=&lang > > > =english > > > To unsubscribe send a blank email to %%email.unsub%% > > > Exchange List admin: [EMAIL PROTECTED] > > > To unsubscribe via postal mail, please contact us at: > > > Jupitermedia Corp. > > > Attn: Discussion List Management > > > 475 Park Avenue South > > > New York, NY 10016 > > > > > > Please include the email address which you have been > contacted with. > > > > > > > > > > > > _________________________________________________________________ > > > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > > > Web Interface: http://intm-dl.sparklist.com/cgi- > > > bin/lyris.pl?enter=exchange&text_mode=&lang=english > > > To unsubscribe send a blank email to [EMAIL PROTECTED] > > > dl.sparklist.com > > > Exchange List admin: [EMAIL PROTECTED] > > > To unsubscribe via postal mail, please contact us at: > > > Jupitermedia Corp. > > > Attn: Discussion List Management > > > 475 Park Avenue South > > > New York, NY 10016 > > > > > > Please include the email address which you have been > contacted with. > > > > > > > > > > > > > _________________________________________________________________ > > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > > Web Interface: > > http://intm-dl.sparklist.com/cgi- > > bin/lyris.pl?enter=exchange&text_mode=&lang > > =english > > To unsubscribe send a blank email to > > %%email.unsub%% > > Exchange List admin: [EMAIL PROTECTED] > > To unsubscribe via postal mail, please contact us at: > > Jupitermedia Corp. > > Attn: Discussion List Management > > 475 Park Avenue South > > New York, NY 10016 > > > > Please include the email address which you have been contacted with. > > > > > > > > _________________________________________________________________ > > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > > Web Interface: http://intm-dl.sparklist.com/cgi- > > bin/lyris.pl?enter=exchange&text_mode=&lang=english > > To unsubscribe send a blank email to [EMAIL PROTECTED] > > dl.sparklist.com > > Exchange List admin: [EMAIL PROTECTED] > > To unsubscribe via postal mail, please contact us at: > > Jupitermedia Corp. > > Attn: Discussion List Management > > 475 Park Avenue South > > New York, NY 10016 > > > > Please include the email address which you have been contacted with. > > > > > > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Web Interface: > http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&t ext_mode=& > lang=english > To unsubscribe send a blank email to > %%email.unsub%% > Exchange List admin: [EMAIL PROTECTED] > To unsubscribe via postal mail, please contact us at: > Jupitermedia Corp. > Attn: Discussion List Management > 475 Park Avenue South > New York, NY 10016 > > Please include the email address which you have been contacted with. > > > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Web Interface: > http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&t ext_mode=&lang=english > To unsubscribe send a blank email to > %%email.unsub%% > Exchange List admin: [EMAIL PROTECTED] > To unsubscribe via postal mail, please contact us at: > Jupitermedia Corp. > Attn: Discussion List Management > 475 Park Avenue South > New York, NY 10016 > > Please include the email address which you have been contacted with. > _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=&lang=english To unsubscribe send a blank email to [EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] To unsubscribe via postal mail, please contact us at: Jupitermedia Corp. 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