On Monday 07 March 2005 19:44, Scott Ryan shaped the electrons to say:
> On Monday 07 March 2005 18:20, Karolis Dautartas shaped the electrons to
say:
> > >> True, but one typically does not have nearly as many users over their
> > >> quota than email addresses that don't exist (which are infinitely
> > >> many). Besides, Spamcop typically would not be able to test that -
> > >> they have to be very lucky to (1) find a mailbox that exist and (2) at
> > >> the same time find one that's full.
> >
> > AP> Spamcop is not testing your mail addresses. They have spam traps
> > (mail AP> adresses which never have used for mail) which should not
> > recieved AP> mails. This traps recievd bounces from you server. When now
> > a spammer AP> send mails to a couple of your users with a forged address,
> > bounces will AP> go out and when murphy want to a spamcop address.
> >
> > There is always an option to disable bounce messages :)
> >
> > It looks like in a couple of years nobody will be able to afford to
> > send bounce messages anyway, as they will occupy 99% of mail server's
> > traffic.
>
> I have now reduced my 'time in queue' to 24hrs to help get bring down my
> remote queue because of bounce messages. This reduced my remote queue from
> 400,00+ to just 40,000 (across 8 servers)
>
> > I have a couple of domains that recieve 5-20k emails per day at
> > random addresses. And there are several hundered domains on the mail
> > server. Imagine if all domains were like the first 2...
> >
> > Karolis
>
> What we will do to resolve this issue is try to write a patch to check the
> dash ext alternate addresses in ldap for the recipient checking.
> We have already done something like this to resolve the 'from' field in
> auto responses.
Incase anyone is interested. Here is a patch to enable RCPTCHECK & SENDERCHECK
for ldap entries that use the DASH ext
Cheers.
--
slr.
'Dont queue mail with Sendmail,
send mail with Qmail ... '
b0n0b0 #qmail on efnet
key: 0x0B65ABDC - http://wwwkeys.pgp.net:11371
--- qmail-smtpd.c 2005-03-10 07:19:54.000000000 +0200
+++ qmail-smtpd.c.new 2005-03-10 10:47:27.000000000 +0200
@@ -987,8 +987,18 @@
if (sendercheck && !bounceflag) {
if (!goodmailaddr()) { /* good mail addrs go through anyway */
if (addrlocals()) {
- char *s;
- switch (ldaplookup(addr.s, &s)) {
+ char *s,*x,temp[1024];
+ strcpy(temp,addr.s);
+ x = strchr(addr.s,'@'); /* check for position of @ in address */
+ if(x != NULL)
+ {
+ strcpy(temp,++x); /* ie. telkomsa.net */
+ while ((x = strchr(temp,'.')) != NULL)
+ *x = '_'; /* telkomsa_net */
+ sprintf(temp,"%s-%s",temp,addr.s);
+ }
+ /* switch (ldaplookup(addr.s, &s)) */
+ switch (ldaplookup(temp,&s)) {
case 1: /* valid */
break;
case 0: /* invalid */
@@ -1036,6 +1046,7 @@
void smtp_rcpt(char *arg)
{
+ char temp[1024]; //temp buffer
if (!seenmail)
{
err_wantmail();
@@ -1115,9 +1126,20 @@
if (!goodmailaddr()) {
logline(4,"recipient verify, recipient not in goodmailaddr");
if (addrlocals()) {
- char *s;
+ char *s,*x;
logline(4,"recipient verify, recipient is local");
- switch (ldaplookup(addr.s, &s)) {
+ /** hack the planet patch */
+ strcpy(temp,addr.s);
+ x = strchr(addr.s,'@'); /* check for position of @ in address */
+ if(x != NULL)
+ {
+ strcpy(temp,++x); /* ie. telkomsa.net */
+ while ((x = strchr(temp,'.')) != NULL)
+ *x = '_'; /* telkomsa_net */
+ sprintf(temp,"%s-%s",temp,addr.s);
+ }
+ /* switch (ldaplookup(addr.s, &s)) */
+ switch (ldaplookup(temp,&s)) {
case 1: /* valid */
logline(4,"recipient verify OK");
break;
