"Greg Hackney" swbell.net> schrieb im Newsbeitrag
news:ksbih.4835$yC5.60@newssvr27.news.prodigy.net...

Greg, I hope you allow me to add, why this dynamic/static issue is existing.

hi all,
I am a linux newbie .
I have set up a postfix mail server and my problem is as follows

I have a broadband internet connection from my isp which gives me a
dynamic ip address,but my problem is that when someone sends mail using
the mail server to lets say yahoo or any other service with spam
protection the mail gets rejected , now how do i avoid this ,what
changes do i need to make .

TIA
aditya

Does anyone know of a method whereby we can reject messages that are
being relayed that are supposedly coming from the recipient? Eg: sender
= user@domain.com; recipient = user@domain.com. Any such restriction
would come after permit_mynetworks, since of course we don't mind if
people send to themselves internally.

I was thinking of header checks, but since they're evaluated
line-by-line, perhaps it's not possible. And if we can, I wouldn't have
the faintest clue where to start. Does anyone have any ideas?

Hello group,

I am operating a Postfix -Amavis-clamav-spamassassin mail server, based on
Debian Woody, which is doing a really great job. The amount of spam that is
still passing the spam filters has dropped down to a fair quota.

Yet, a new problem has come up - bounce-spam! I guess, most of you have
experienced this issue as well - your mail address has been abused and added
to the return-path line of widly distributed spam. Whenever the receipient's
mail box does not exist or for some other reason the mail is bounced, you
will receive a bounce message (NDR) out of the blue. Personally, I am
receiving approx. 50-60 of these bounces each day. This is quite
frustrating, since I have not found a way to filter out this stuff on the
server's end. A lot of mail server administrators just seem to not configure
their servers to not send NDRs when the non-delivery situation is caused by
spam or virus reasons.

I came up with the following idea, which I belive, could be implemented
using amavisd. Please let me know what you think of this concept.

Given, we have a small setup, whereas we have one mailserver being the only
MTA for Domain abc.tld. All outbound traffic is passing through this server.
We need to setup a database, which is storing...

Thanks for the reply, I tried, but it would still allow anyuser ( from
$mynetworks ) using postfix to relay mail to external domains.

sd

Bonjour à toutes et à tous,

Suite à un mauvais paramétrage de mon firewalldont une des fonctions
est le filtrage antispam, celui-ci s'est trouvé configuré en relais
smtp ouvert depuis fin octobre. Depuis jeudi dernier, postfix s'est
retrouvé bloqué.

Après plusieurs recherches et après vérification avec la société
installatrice du produit, le technicien aurait omis de limiter le
relais à notre seule organisation.

Résultat -> plus d'un milliard de mail transite par notre serveur
depuis 2 mois. Le relais est maintenant configuré mais notre queue
postfix contient encore un million de messages!

La solution que j'ai mise en place a été de rajouter dans le main.cf
les commandes permettant de renvoyer une seule fois les mails dans la
file d'attente. Celle -ci se vide donc progressivement mais a raison de
100 mails par heure, et la réception et l'envoi de mail sont toujours
bloqués au niveau de mes clients.

Auriez vous une solution (ou option) permettant de vider la file
d'attente à l'exception des mails contenant mon domaine dans le
destinataire ou l'expéditeur??

Hi everyone,

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Ok thanks.

On Dec 12, 3:47 pm, "Mike" gmail.com> wrote:

bcochofel wrote:

bcochofel wrote:

I don't really think this would be a question to ask us Postfix folks.
I would look at the documentation for the POP3/IMAP server that you
want to use.