I'm looking for some information on preventing the sending of backscatter
from a Postfix gateway mail server.
The server itself does not and will not hold a recipient list, therefore I
don't know what the best way forward would be? The server accepts for a
number of different domains.
Any advice
You don't need a new LDAP tree, just a suitable object endowed with
the right attributes.
Yes, sure. But we wouldn't like to intermix alias information with user, group
or host information.
Sorry, I don't do LDAP schema design, but you should be able to Google
some examples along these
On 2009-09-15 Dan Slay wrote:
I'm looking for some information on preventing the sending of
backscatter from a Postfix gateway mail server.
The server itself does not and will not hold a recipient list,
Then you can't avoid sending backscatter. Period. RFC 2821 clearly
states:
| If an SMTP
Thanks, that's what I have read. Which is why this make things more awkward.
I cannot see that holding a recipient list is a solution. If, for instance,
you relay for thousands of domains all going to different MTA's that hold
each individual domains recipient list, its not really that straight
Hi,
I have a postfix (2.5.5) setup used both to send/receive our company
e-mail and at the same time a few mailing lists (managed by sympa on
another domain).
Let's say I want to separate both outbound traffic, by binding the
smtp sender daemon to a different IP address depending on if I send
Dan Slay wrote:
Thanks, that's what I have read. Which is why this make things more awkward.
I cannot see that holding a recipient list is a solution. If, for
instance, you relay for thousands of domains all going to different
MTA's that hold each individual domains recipient list, its not
Mark Goodge schrieb:
Dan Slay wrote:
Thanks, that's what I have read. Which is why this make things more
awkward.
I cannot see that holding a recipient list is a solution. If, for
instance, you relay for thousands of domains all going to different
MTA's that hold each individual domains
Ansgar Wiechers put forth on 9/15/2009 4:28 AM:
Then you can't avoid sending backscatter. Period. RFC 2821 clearly
states:
| If an SMTP server has accepted the task of relaying the mail and
| later finds that the destination is incorrect or that the mail
| cannot be delivered for some
Hi All,
I need to execute my code when I receive email on my postfix smtp server.
Sorry I couldn't understand what Wietse said:
You can pipe-to-command with ~/.forward (see man 5 aliases) and with the
pipe(8) delivery agent (see man 8 pipe).
Can anybody tell me what I can do if I want to
Hi All,
I need to execute my code when I receive email on my postfix smtp server.
Sorry I couldn't understand what Wietse said:
You can pipe-to-command with ~/.forward (see man 5 aliases) and with the
pipe(8) delivery agent (see man 8 pipe).
Can anybody tell me what I can do if I want to
Don't bounce you're overquota messages... just reject them :) at mail
gateway level at smtp dialogue, this way you will be saving resources on
scanning and later perhaps on bouncing them from any place :)
http://postfixquotareject.ramattack.net
:) :)
Mark Goodge schrieb:
Dan Slay wrote:
I'd like to keep copies of all the spam coming into the address mentioned
below. I thought all that I needed was an OK in the access file to force
acceptance of all mail to this address. My attempt at whitelisting the address
is not working. All my anti-spam measures are still whacking spam
if the relay host has got a username and password how can i specify these in
the main.cf
a google on this showed me the following:
relayhost = smtp.example.com:25
smtp_sasl_auth_enable=yes
smtp_sasl_password_maps=hash:/etc/postfix/sasl_passwd
smtp_sasl_security_options=
On Tue, 15 Sep 2009 16:06:54 +0200
K bharathan kbhara...@gmail.com wrote:
if the relay host has got a username and password how can i specify
these in the main.cf
a google on this showed me the following:
relayhost = smtp.example.com:25
smtp_sasl_auth_enable=yes
K bharathan put forth on 9/15/2009 9:06 AM:
if the relay host has got a username and password how can i specify
these in the main.cf http://main.cf
a google on this showed me the following:
relayhost = smtp.example.com:25 http://smtp.example.com:25
smtp_sasl_auth_enable=yes
On 2009-09-15 K bharathan wrote:
if the relay host has got a username and password how can i specify
these in the main.cf
a google on this showed me the following:
relayhost = smtp.example.com:25
smtp_sasl_auth_enable=yes
smtp_sasl_password_maps=hash:/etc/postfix/sasl_passwd
On 9/15/2009 8:58 AM, Stan Hoeppner wrote:
I'd like to keep copies of all the spam coming into the address mentioned below. I
thought all that I needed was an OK in the access file to force acceptance of
all mail to this address. My attempt at whitelisting the address is not working. All my
On 9/15/2009 8:02 AM, Vernon A. Fort wrote:
I had an internal server problem which ended up with 1000 or so messages
sitting in the mail queue with a HOP-COUNT exceeded. These are good
emails so i need to find a way to remove most of the Received lines in
the message header and re-queue
I am seeing a few spams coming through with a from address (seen on my
postfix logs) that does not match the From address shown on my users
Outlook. In fact my users are seeing a From address as their own,
something that my postfix server currently does not allow using
mynetworks and
Noel Jones wrote:
On 9/15/2009 8:02 AM, Vernon A. Fort wrote:
I had an internal server problem which ended up with 1000 or so messages
sitting in the mail queue with a HOP-COUNT exceeded. These are good
emails so i need to find a way to remove most of the Received lines in
the message header
On Tue, 15 Sep 2009 10:59:20 -0400, wiskbr...@hotmail.com wrote:
I am seeing a few spams coming through with a from address (seen on my
postfix logs) that does not match the From address shown on my users
Outlook. In fact my users are seeing a From address as their own,
something that my
wiskbr...@hotmail.com wrote:
I am seeing a few spams coming through with a from address (seen on my
postfix logs) that does not match the From address shown on my users
Outlook. In fact my users are seeing a From address as their own,
something that my postfix server currently does not allow
wiskbr...@hotmail.com wrote:
I am seeing a few spams coming through with a from address (seen on my
postfix logs) that does not match the From address shown on my users
Outlook. In fact my users are seeing a From address as their own,
something that my postfix server currently does not
Ahhh, is this one of the reasons some folks put 'all' of their restrictions
under smtpd_recipient_restrictions (only have to list things once)?
Thanks Noel.
--
Stan
Noel Jones put forth on 9/15/2009 9:27 AM:
On 9/15/2009 8:58 AM, Stan Hoeppner wrote:
I'd like to keep copies of all the spam
wiskbr...@hotmail.com wrote:
I am seeing a few spams coming through with a from address (seen on my
postfix logs) that does not match the From address shown on my users
Outlook. In fact my users are seeing a From address as their own,
something that my postfix server currently does not allow
When trying to send a message with 46 recipients in the Bcc I get an
error from my MUA The server mail.covisp.net did not recognize the
recipients.
When I look at the maillog on the server, the only thing I see logged
is:
Sep 15 10:10:20 mail postfix/smtpd[8201]: connect from *home
On Tue, Sep 15, 2009 at 11:08:55AM +0200, Edgar Fuß wrote:
You don't need a new LDAP tree, just a suitable object endowed with
the right attributes.
Yes, sure. But we wouldn't like to intermix alias information with user,
group or host information.
Sorry, I don't do LDAP schema design,
I am running Postfix 2.5.6 as a front-end gateway to an Exchange server
and a Mailman server. I currently have about 25 domains that I receive
mail for. Of those 25, 23 of them forward to the Exchange server and the
other 2 forward to the Mailman server. I was using a
check_recipient_access
Hi, I am just dealing with my first Postfix installation.
After
following a few tutorials, I’m still not able to start the Postfix
server. I looked for solutions in many forums, but I cannot find this
problem and no one could help me. Tailing the log files there is an error
coming over and
On Tue, 15 Sep 2009, Jose Carlos Madrid wrote:
Sep 14 11:25:30 hostname postfix/cleanup[30095]: fatal: /etc/postfix/mysql_alias.cf, line
1: missing '=' after attribute name: ??h
It appears you have saved mysql_alias.cf in a UTF-16 encoding. Don't do
that; Postfix configuration files are
On 9/15/2009 11:01 AM, Stan Hoeppner wrote:
Ahhh, is this one of the reasons some folks put 'all' of their restrictions
under smtpd_recipient_restrictions (only have to list things once)?
Yes, exactly.
-- Noel Jones
On 9/15/2009 12:34 PM, Jeff Grossman wrote:
I am running Postfix 2.5.6 as a front-end gateway to an Exchange server
and a Mailman server. I currently have about 25 domains that I receive
mail for. Of those 25, 23 of them forward to the Exchange server and the
other 2 forward to the Mailman
kazabe wrote:
My boss was send the last friday aprox 50 messages. He asked me about
why not all the messages was correctly received by the destination
account (both in the same domain and server). I check the logs, and
only found 5 messages sended by him. but the sended folder in the my
boss
For postfix mail sent from cron, or other sendmail command line mail, sent to a
local user on the same server, I am getting the following received header:
Received: by host112.mydomain.com (Postfix, from userid 0) id 4A8E114B8104;
Tue, 15 Sep 2009 03:53:19 -0500 (CDT)
That is the ONLY received
Thank you Rob,
you were right. I edited the file in Windows. I didn't realize. But after save
it with vi editor It still keeps giving me this error. Notice it is not (line
1: missing '=' after attribute name: ??u) anymore but similar.
Sep 15 23:26:01 r25841 postfix/trivial-rewrite[31130]:
On Tue, 15 Sep 2009, Jose Carlos Madrid wrote:
you were right. I edited the file in Windows. I didn't realize. But
after save it with vi editor It still keeps giving me this error. Notice
it is not (line 1: missing '=' after attribute name: ??u) anymore but
similar.
Please don't top post.
Steve Fatula a écrit :
For postfix mail sent from cron, or other sendmail command line mail, sent to
a local user on the same server, I am getting the following received header:
Received: by host112.mydomain.com (Postfix, from userid 0) id 4A8E114B8104;
Tue, 15 Sep 2009 03:53:19 -0500
Why? What problem are you trying to solve.
if you inist, force it to go to smtpd by using a content_filter in the
pickup service in master.cf.
The problem to be solved is that various filters we use, spamassassin, dcc,
etc., use the receive from header in order to use whitelists and such
On Tue, 15 Sep 2009, LuKreme wrote:
When trying to send a message with 46 recipients in the Bcc I get an
error from my MUA The server mail.covisp.net did not recognize the
recipients.
When $smtpd_recipient_limit is exceeded, Postfix says:
452 4.5.3 Error: too many recipients
When I look
On 2009-09-15 Steve Fatula wrote:
Why? What problem are you trying to solve.
if you inist, force it to go to smtpd by using a content_filter in
the pickup service in master.cf.
The problem to be solved is that various filters we use, spamassassin,
dcc, etc., use the receive from header in
yes, i check all the queues.
dont appear nothing.
«Existen dos cosas infinitas:
el universo y la estupidez humana... y no estoy muy seguro de la primera» :
Albert Einstein
2009/9/15 Ivan Stepaniuk i...@albafotonica.com:
kazabe wrote:
My boss was send the last friday aprox 50 messages. He
Your concept is b0rken. Received headers can be forged just as well as
any other header.
Not in my case. That is already accounted for. But irrelevant since that was
not the question.
If you want to whitelist by sending MTA, why don't you just whitelist
those MTAs via a check_sender_access or
On Tue, 15 Sep 2009, Sahil Tandon wrote:
Is there some other place I could have looked to see that problem in
the logs?
There is no 'problem' as far as Postfix is concerned, so nothing is
logged. After sending the 452 to the client, Postfix retains a buffer
of the 25 recipients it *did*
On 9/15/2009 7:14 PM, Steve Fatula wrote:
Your concept is b0rken. Received headers can be forged just as well as
any other header.
Not in my case. That is already accounted for. But irrelevant since that was
not the question.
If you want to whitelist by sending MTA, why don't you just
Small domain, just a home network with a postfix server to keep the
baddies out. But for some reason, outbound mail is failing for one
user and I can't quite make out why. She is in a virtual domain
[example.org below] that should forward to her home mail [home.net,
let's call it]. This
45 matches
Mail list logo
