Does your server.log show any relay attempt denys?

At 10/13/2001 03:53 PM, you wrote:

>Hello Danny,
>
>Yes sir that is my mail server.  Thank you very much for doing the test.
>I am not sure how the relaying was being done?  I guess everything is ok
>now?  Here is a sample of the smtp file I was looking at I am not including
>the actual ip address  But as far as I can tell looks like this person was
>trying to relay through me? I have about 50 of these with the same ip address
>doing the relaying. I did a ip block here so I know who knowns the ip. Wonder
>if I should send the smtp log to the ip owner or just drop 
>it?  [13/Oct/2001:00:05:02
>-0400] OK [000.00.000.00] [HELO] [0 bytes] xxx.xxx.xx.com[13/Oct/2001:00:05:02
>-0400] OK [] [MAIL] [0 bytes] From: <[EMAIL PROTECTED]>
>[13/Oct/2001:00:05:03 -0400] OK [xxx.xx.xxx.xx] [RCPT] [0 bytes] 
>To:<[EMAIL PROTECTED]>
>
>Danny Mallory <[EMAIL PROTECTED]> wrote:
> >Assuming 216.68.165.38 is the mail server your questioning. I just
> >attempted to relay some
> >mail through it and got stopped with Require AUTH.
> >
> >The message could not be sent because one of the recipients was rejected
>by
> >the server. The rejected e-mail address was '[EMAIL PROTECTED]'.
>
> >Subject 'Testing 216.68.165.38 mail server', Account: 'letvffkeyit.com',
>
> >Server: '216.68.165.38', Protocol: SMTP, Server Response: '501 Invalid mail
>
> >recipient. Relay requires SMTP AUTH.', Port: 25, Secure(SSL): No, Server
>
> >Error: 501, Error Number: 0x800CCC79
> >
> >
> >Danny
> >
> >At 10/13/2001 02:05 PM, you wrote:
> >>Hello Danny, and thanks for the help.  I am still using version 5.0 here
>since
> >>it has been rock solid. I looked in my SMTP log and found one ip relaying
> >>a bunch of mail that were not for my users.  I was under the impression
>that
> >>if the mail is not for a user of your system, that the smtp will not go
>
> >>through?
> >>  Not sure what happened? .  I thought if restrict ip address was  left
>blank,
> >>an SMTP user may login from any host or has this changed with any newer
>
> >>version
> >>of Sambar?  Thanks again have a great afternoon!
> >>Vince
> >>Danny Mallory <[EMAIL PROTECTED]> wrote:
> >> >Require auth overrides relaying. If someone compromised one of your email
> >>
> >> >addresses
> >> >and password then they could have sent mail. Also, not sure what version
> >>
> >> >your at but
> >> >there was a known issue with the IP address in the restrict IP cause
>to
> >>
> >> >open you up
> >> >for relay break both require auth and restrict relay..
> >> >
> >> >Try changing your restrict IP address to blank..
> >> >
> >> >Danny
> >> >
> >> >At 10/13/2001 01:03 PM, you wrote:
> >> >
> >> >>Hello everyone, and hope everyone is doing well?
> >> >>I have a question about smtp relay.  I have been using Sambar for a
>while
> >> >>now, and all seemed to be working great. It sure is a great program.
>I
> >>haven't
> >> >>touched anything, so I am not sure how someone was successfull in using
> >>my
> >> >>sambar mail server as a relay?  I did trace the ip and blocked it using
> >>
> >> >>Blackice,
> >> >>but I am concerned in this happening again with all these attacks going
> >>on
> >> >>such as the Red Worm etc!
> >> >>
> >> >>I am turning to my fellow sambar users for help.  Here is what I have
>in
> >> >>my config file. Am I missing something? Thanks in advance
> >> >>
> >> >>Vince
> >> >>
> >> >>Run SMTPD: Yes
> >> >>Relay Delivery:  Forward immediately
> >> >>Relay Domains:  I don't have anything in here
> >> >>Use MTA:  Yes
> >> >>Unknown Mailbox:  Null
> >> >>Require Auth:  Yes
> >> >>Restrict Relay:  Yes
> >> >>Restrict Relay IP:  127.0.0.1
> >> >>Relay from User:  I don't have anything here
> >> >>
> >> >>
> >> >>------------------------------------------------------------------------
>
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> >> >
> >> >
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