HELP! My mail server is relaying for a spammer big time....

[phil at 1918.com (Phil Buckley)]

That looked like it might do the trick, but alas, they are still scaling the walls....

Archers, call in more archers!!!

Phil Buckley


On 5/8/00 at 3:15 PM Jerry A Clabaugh wrote:

>I also don't understand sendmail commands, but succeeded in shutting
>down most relay methods by putting the following at the bottom of
>my sendmail.cf file (I found this at
>http://www.sendmail.org/~ca/email/check.html#check_rcpt)
>I'm using sendmail 8.8.8
>
>
>Scheck_rcpt
># anything terminating locally is ok
>R< $+ @ $=w >		$@ OK
>R< $+ @ $=R >		$@ OK
>
># anything originating locally is ok
>R$*			$: $(dequote "" $&{client_name} $)
>R$=w			$@ OK
>R$=R			$@ OK
>R$@			$@ OK
>
># anything else is bogus
>R$*			$#error $: "550 relaying not allowed"
>
>
>
>On Mon, 8 May 2000, Phil Buckley wrote:
>
>> Help!
>> 
>> Being only the de facto sys admin, and having only a basic understanding of sendmail, I am now under seige from the spammers. Can some kind soul please help me shut my smtp door that I apparenly left not only unlocked, but wide open....
>> 
>> sendmail.mc file below::::::::
>> 
>> divert(-1)
>> dnl This is the macro config file used to generate the /etc/sendmail.cf
>> dnl file. If you modify thei file you will have to regenerate the
>> dnl /etc/sendmail.cf by running this macro config through the m4
>> dnl preprocessor:
>> dnl
>> dnl        m4 /etc/sendmail.mc > /etc/sendmail.cf
>> dnl
>> dnl You will need to have the sendmail-cf package installed for this to
>> dnl work.
>> include(`/usr/lib/sendmail-cf/m4/cf.m4')
>> define(`confDEF_USER_ID',``8:12'')
>> OSTYPE(`linux')
>> undefine(`UUCP_RELAY')
>> undefine(`BITNET_RELAY')
>> define(`confAUTO_REBUILD')
>> define(`confTO_CONNECT', `1m')
>> define(`confTRY_NULL_MX_LIST',true)
>> define(`confDONT_PROBE_INTERFACES',true)
>> define(`PROCMAIL_MAILER_PATH',`/usr/bin/procmail')
>> FEATURE(`smrsh',`/usr/sbin/smrsh')
>> FEATURE(mailertable)
>> FEATURE(`virtusertable',`hash -o /etc/mail/virtusertable')
>> FEATURE(redirect)
>> FEATURE(always_add_domain)
>> FEATURE(use_cw_file)
>> FEATURE(local_procmail)
>> MAILER(procmail)
>> MAILER(smtp)
>> FEATURE(`access_db')
>> FEATURE(`rbl')
>> FEATURE(`blacklist_recipients')
>> dnl We strongly recommend to comment this one out if you want to protect
>> dnl yourself from spam. However, the laptop and users on computers that do
>> dnl not hav 24x7 DNS do need this.
>> dnl FEATURE(`accept_unresolvable_domains')
>> FEATURE(`relay_hosts_only')
>> dnl FEATURE(`relay_based_on_MX')
>> 
>> Phil Buckley
>> 
>> 
>> -
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>> 
>
>-
>Subcription/unsubscription/info requests: send e-mail with
>"subscribe", "unsubscribe", or "info" on the first line of the
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