> A user comes into my SMTP server, using a userid and password. The > userid/password is no longer valid (it was at one time, but not > anymore). > > The spammers still come to the SMTP server, and (attempt) to send > emails. The SMTP server accepts the emails, then bit-buckets them. That's...more >>

On Thu, 17 Apr 2008 14:53:35 -0400, "Sanford Whiteman" <swhitemanlistens-software@cypressintegrated.com> wrote: >> Well, that's not a terribly useful suggestion since this is how IIS >> SMTP is built by MSFT. > >No, it's not! > >If a session is not allowed to relay to a domain -- because i...more >>

> Well, that's not a terribly useful suggestion since this is how IIS > SMTP is built by MSFT. No, it's not! If a session is not allowed to relay to a domain -- because it is not authenticated via ESMTP AUTH and does not come from pre-authenticated IP address -- it _will not be allowed to...more >>

On Wed, 16 Apr 2008 00:11:02 -0400, "Sanford Whiteman" <swhitemanlistens-software@cypressintegrated.com> wrote: >> The spammer can't send emails, they don't get relayed, but the sender >> is never notified that the attempt fails. There was logic behind that >> (it allowed SMTP to mask a userid...more >>

> The spammer can't send emails, they don't get relayed, but the sender > is never notified that the attempt fails. There was logic behind that > (it allowed SMTP to mask a userid/password attack, since it never told > that the user's attempt failed!) The *only* reason you should be accepting...more >>

No, I haven't because that will probably solve this particular error, but it'll bring back the issue that causes that the event log of my server fills up with "Attempted to read or write protected memory" events. What I need to find out is if MS knows about this buggy hotfix that they post ...more >>

On Mon, 14 Apr 2008 12:17:03 -0400, "Sanford Whiteman" <swhitemanlistens-software@cypressintegrated.com> wrote: >> Right from teh box, if a user fails to authenticate, SMTP accepts teh >> message from teh user but doesn't send it. > >Not if correctly configured. A 550 error will be returned ...more >>

> Right from teh box, if a user fails to authenticate, SMTP accepts teh > message from teh user but doesn't send it. Not if correctly configured. A 550 error will be returned if the recipient domain is not allowed for relay, and any subsequent DATA command will be discarded. What setti...more >>

Right from teh box, if a user fails to authenticate, SMTP accepts teh message from teh user but doesn't send it. This creates excessive traffic to teh server when a compromised userid/password has been corrected--the spammers think the spam is continuing OK, and keep sending it. Anyone know o...more >>

> Problem is that thousands of spams were sent with his account, and > now they are bouncing and bouncing and bouncing... To be sure. Of course, the same spam could have been sent through any server; his (E)SMTP credentials need not have been compromised to do so. Naturally, it increases...more >>

On Sat, 12 Apr 2008 00:40:44 -0400, "Sanford Whiteman" <swhitemanlistens-software@cypressintegrated.com> wrote: >> Any (easy) way to disable badmail or the NDR in Server 2003 SMPT? > >Disable Badmail? Just clear the files out nightly if you don't to see >them, but Badmail is the double-bou...more >>

> Any (easy) way to disable badmail or the NDR in Server 2003 SMPT? Disable Badmail? Just clear the files out nightly if you don't to see them, but Badmail is the double-bounce archive (not simple bounces), and in normal operation you should only see mail in there whose sender and recipient...more >>

> I've checked the properties of the virtual SMTP server and there are no > restrictions on who can send email to this server. Even in a vanilla Windows install, there are other areas to check if you see connection resets, in addition to the IIS SMTP access control list: - Windows firewa...more >>

> The SMTP Virtual server is working fine for now, but I wanted to > change some properties as a part of a security policy and I don’t > know how. Have you swapped in the old version of adsiis.dll? It does seem like you've pinpointed the offending file. --Sandy -------------...more >>

Hi, I have 3 VLANs configured on my domain, one VLAN has the web sevrer which is configured with SMTP and routes mail fine, another VLAN which can send email to the web server and get its mail processed, however I have the last VLAN which also sends email to this web server but doesnt get p...more >>

Hi Sandy and Volz I'm having exactly the same problem mentioned and more: after applying the hotfix I can’t manage the list of computers that may connect and relay through the default “SMTP Virtual Server”, because after doing the changes to the list of IP and pressing “Apply”, I ...more >>

I figured it out, it was my antivirus software blocking port 25... "sjs" wrote: > I've got a small subnet (192.168.0.x) made up of two computers and a > production subnet (10.1.1.x) where all users and my Exchange server reside. > "Bridging" the two networks sits a server that it dual-hom...more >>

I've got a small subnet (192.168.0.x) made up of two computers and a production subnet (10.1.1.x) where all users and my Exchange server reside. "Bridging" the two networks sits a server that it dual-homed to both networks (two nics: 192.168.0.1 and 10.1.1.100). Sitting on this server is SQL...more >>

Any (easy) way to disable badmail or the NDR in Server 2003 SMPT? (This Is Not Exchange Server!) ...more >>

LOL. great... I have ping the product team about this as well. kinda annoying err msgs. -- Regards, Bernard Cheah http://www.iis.net/ http://msmvps.com/blogs/bernard/ "Bassilian, Ron" <Ronb@es.tv> wrote in message news:EF49A0CC-FE91-4CCA-BFDC-C4A9F109BDEA@microsoft.com... > When I ...more >>

> hotmail o yahoo, if I try to send to another domains I don´t have > problems, > the id problem in event viewer is 4006 That's a general connection failure and doesn't on its own provide SMTP- or other TCP-level diagnosis. Check your outbound SMTP logs for these connections to see whe...more >>

> When I try to send an email to the account from yahoo (send to > name@domain.com ) no message ever comes through or goes into the mailbox. Never the POP3 part (which is secondary to SMTP). Do you see the message in your SMTP logs? That is the very first place to look. --Sandy ...more >>

> pop3 =3D 995 > smpt =3D 465 If you change the SMTP port, you will not be able to receive mail from t= he = Internet. Remote mail servers will only connect to WKP TCP 25. You can change the POP3 port right in the management utility, = Server-Properties. --Sandy --------...more >>

When I try to change the setting for allowed SMTP servers under Access Tab -> Relay, I get the "unspecified error" error. At any rate, I wound up changing some settings in Sharepoint (from automatic to manual), now it's working fine, and I'm getting e-mails into the server in question. "Be...more >>

I don't know sharepoint. which setting you are trying to set and give u the error? -- Regards, Bernard Cheah http://www.iis.net/ http://msmvps.com/blogs/bernard/ "Ron B." <RonB@discussions.microsoft.com> wrote in message news:1D195C9F-4462-417E-A996-4F0F85C5579C@microsoft.com... >I...more >>

Ya. got that as well. but the config actually made into the system, right? something to do with the old config system, should not relate to firewall at all. -- Regards, Bernard Cheah http://www.iis.net/ http://msmvps.com/blogs/bernard/ "Ron B." <RonB@discussions.microsoft.com> wrot...more >>

Do you install the IIS 6 Management console? the SMTP is not manage in the new IIS 7 Manager, but rather then old one. check the component setup for IIS. -- Regards, Bernard Cheah http://www.iis.net/ http://msmvps.com/blogs/bernard/ "Ron B." <RonB@discussions.microsoft.com> wrote in m...more >>

I don't think so. I have to cancel out, and when I go back in, the settings are back to where they used to be. It may help to know that I'm trying to set this up so I can enable incoming e-mail on sharepoint v3, which sits on this server. But when I try to set up an e-mail for a sharepoin...more >>

I should add that I changed to a USB 56k modem from an internal 56k modem....more >>

I recently changed my dail-up modem that we use to connect to our isp and now users on the LAN can't log on to their accounts. We use windows 2003 sever. Any ideas on how I can fix this....more >>