it holding onto the mail for?
perhaps you have soft_bounce set to on ?
if not, you may have smtp_reply_filter set
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ere:
https://marc.info/?l=postfix-users=164926643409705=2
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Spam = (S)tupid (P)eople's (A)dvertising (M)ethod
On 24 May 2022, at 8:09 am, Matus UHLAR - fantomas wrote:
I have customer where incoming messages have the
"message was received from external source"
banned added.
The resulting messages don't have valid DKIM-signature: (or none at all),
and the only way to forward without problems
Matus UHLAR - fantomas:
If there's no way to do this now, I'll have to search for one.
On 24.05.22 09:43, Wietse Venema wrote:
There is a way to do this, and that involves using a Milter (or any
kind of content filter). Postfix does not implement every possible
edge case.
after some
at:
https://marc.info/?l=postfix-users=2=1=recommended+TLS+settings=b
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"One World. One W
stop most probes.
The Postfix question: Is there a reason this is a bad idea, and could it
cause legitimate MTAs to be banned?
depends on the filter sensibility. the RCPT command may fail because of
valid reasons, e.g. someone mistyped recipient address.
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as adding "mail received from outside" disclaimer to
incoming mail for which instructions exist and should be useful
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On Fri, Jun 03, 2022 at 11:09:08AM +0200, Matus UHLAR - fantomas wrote:
this will unpack the tarball in local directory.
I use standard debian packages, there's SASL related patch but it doesn't
seem to affect this issue
https://sources.debian.org/patches/postfix/3.5.6-1/
https
On 02.06.22 08:38, raf wrote:
>No. Perhaps in the past, but no longer. I grepped for
>/etc/postfix/sasl in every file on a debian11 system
>and it didn't appear in libsasl2 or anywhere
>interesting.
On Thu, Jun 02, 2022 at 03:45:01PM +0200, Matus UHLAR - fantomas wrote:
maybe
helo=
Jun 3 05:07:39 proxy2 postfix/smtpd[10808]: NOQUEUE: reject: RCPT from unknown[192.0.2.1]: 554 5.7.1
: Recipient address rejected: Mail services for this domain removed;
from= to= proto=ESMTP helo=
El 31/5/22 a las 16:00, Matus UHLAR - fantomas escribió:
On 31.05.22 12:55, SysAdmin EM
things like saslfinger
and apparmor rules and the postfix package file list
and augeas-lenses (a config file parser). But nothing
in any libsasl files or postfix files.
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to trigger? Perhaps there's other way to achieve it.
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Linux IS user friendly, it's just selective
On Tue, May 31, 2022 at 09:02:12PM +0200, Matus UHLAR - fantomas wrote:
for hotmaul.com and hormail.com use simple check_sender_access and
check_recipient_access.
On 01.06.22 08:27, Bastian Blank wrote:
Or check the recipient domain in the application that receives the
e-mail addresses. Just
)
negritaa...@hormail.com
Any chance of blocking the MX of a recipient? Reading the documentation I
found the parameter "check_sender_mx_access" but I think it refers to a
sender and not a recipient.
On 31.05.22 21:00, Matus UHLAR - fantomas wrote:
there's also check_recipient_mx_access,
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Atheism is a non-prophet organization.
On 30.05.22 14:02, Peter wrote:
Next question: What happens if zen returns multiple responses:
127.0.0.10
127.0.0.3
postscreen_dnsbl_sites = zen.spamhaus.org=127.0.0.[1..2]*3
zen.spamhaus.org=127.0.0.3*2
zen.spamhaus.org=127.0.0.[4..255]*3
On 30.05.22 10:06, Matus UHLAR - fantomas wrote
= zen.spamhaus.org=127.0.0.[1..2]*3
zen.spamhaus.org=127.0.0.3*2
zen.spamhaus.org=127.0.0.[4..255]*3
How would that affect the answer to the above two questions?
this should produce score 6 for the example above
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>Matus UHLAR - fantomas:
>> If there's no way to do this now, I'll have to search for one.
On 24.05.22 09:43, Wietse Venema wrote:
>There is a way to do this, and that involves using a Milter (or any
>kind of content filter). Postfix does not implement every possible
>edge ca
Matus UHLAR - fantomas:
If there's no way to do this now, I'll have to search for one.
On 24.05.22 09:43, Wietse Venema wrote:
There is a way to do this, and that involves using a Milter (or any
kind of content filter). Postfix does not implement every possible
edge case.
I probably should
n the mail message?
On 5/24/22 03:36, Matus UHLAR - fantomas wrote:
subsequent milters will see message as modified with previous milter.
On 24.05.22 08:12, James Feeney wrote:
That simple but important point seems to be missing from the Postfix
"Milter Readme".
What I'm wonderin
On 24 May 2022, at 8:09 am, Matus UHLAR - fantomas
wrote:
I have customer where incoming messages have the
"message was received from external source"
banned added.
The resulting messages don't have valid DKIM-signature: (or none
at all), and the only way to forward withou
e that one is used for
DKIM signatures. I haven't expected more headers to be rewritten.
If there's no way to do this now, I'll have to search for one.
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Var
s received, every message processed by
milter is by definition incoming.
note that when you submit message to postfix, it's "incoming".
opendkim has ways to decide when the message is to be signed, check its
docs.
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on Debian 11.
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The early bird may get the worm, but the second mouse gets the cheese.
addresses from
uppercase to lowercate AND still use virtual_mailbox_maps to deliver mail to
virtual mailboxes.
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Dnia 18.05.2022 o godz. 15:01:45 Matus UHLAR - fantomas pisze:
are you trying to implement SRS when sending to gmail?
On 2022-05-18 15:44, Jaroslaw Rafa wrote:
No, I just want to change the domain, because Gmail keeps putting mail
originating from my domain (rafa.eu.org) to recipients Spam
to gmail?
I'm just working on this issue (not only to gmail) - conditionally rewrite
sender if it's not from local domain.
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while you can of course add upstream servers to mynetworks and make mail
receiving work, it's a bad idea because this variable is used for outgoing
mail.
if you need to block accepting mail from unauthorized IP address, I
recommend you doing it using access lists
http://www.postfix.org/
ast reject, again.
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"One World. One Web. One Program." - Microsoft promotional adv
W dniu 16.05.2022 o 15:14, Matus UHLAR - fantomas pisze:
Any idea to whitlist ?
On 16 May 2022, at 9:35 pm, Matus UHLAR - fantomas
wrote:
perhaps the null address at outgoing server, so you don't
reject your own bounces
W dniu 16.05.2022 o 14:46, Viktor Dukhovni pisze:
No. Better
Any idea to whitlist ?
On 16 May 2022, at 9:35 pm, Matus UHLAR - fantomas wrote:
perhaps the null address at outgoing server, so you don't reject your own
bounces
W dniu 16.05.2022 o 14:46, Viktor Dukhovni pisze:
No. Better to apply the reject rule only on the inbound side, where
Any idea to whitlist ?
On 16 May 2022, at 9:35 pm, Matus UHLAR - fantomas wrote:
perhaps the null address at outgoing server, so you don't reject your own
bounces
On 16.05.22 22:46, Viktor Dukhovni wrote:
No. Better to apply the reject rule only on the inbound side, where
it should only
elf and a bounce is generated, second time
the bounce gets rejected.
Any idea to whitlist ?
perhaps the null address at outgoing server, so you don't reject your own
bounces
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From: owner-postfix-us...@postfix.org <> On Behalf Of Matus UHLAR - fantomas
perhaps a but I don't see
On 15.05.22 14:21, Dino Edwards wrote:
So you agree, it should be passing but it's not for some reason.
it was supposed to be a "bug I don't see".
can you install with cur
On 2022-05-05 19:41, Matus UHLAR - fantomas wrote:
non-existing and unknown addresses can hardly be listed in
smtpd_sender_login_maps so I can't exactly see how they are protected.
(and RTFS didn't help me)
On 05.05.22 20:18, Benny Pedersen wrote:
envelope senders can be rejected on port 25
Hello,
Matus UHLAR - fantomas:
note that this is mentioned in reject_sender_login_mismatch:
MAIL FROM address,"
reject_sender_login_mismatch
Reject the request when $smtpd_sender_login_maps specifies an
owner for the MAIL FROM address, but the c
and internal_networks.
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My mind is like a steel trap - rusty and illegal in 37 states.
e-from="oemcustomerc...@acuitybrands.com";
client-ip=13.110.78.238
perhaps a but I don't see
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Depr
that was using SPF macros. I tried to find out if our version of
spf (2.0.0) supported SPF macros but I can't seem to find any information
on that. Can someone shed some lights on this?
perhaps you can post logs? local part of mail address may be censored...
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his with
gmail", as it's generally very hard to confirm *anything* with gmail,
i.e. the reason why a certain mail will be rejected or land in junk.
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Varov
sed blocklists etc.
I only use non-systemd systems and have no idea of that one.
('Can understand why you would want to put everything in one, but
do not like it.)
I guess systemd-resolved does the same, just different way.
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: (putting original From: to Reply-To:).
I plan to use this in the next step of my mail improvements.
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I'm trying to RTFS now, but I'm not a programmer...
On 2022-05-04 at 12:20:49 UTC-0400 (Wed, 4 May 2022 18:20:49 +0200) Matus
UHLAR - fantomas is rumored to have said:
May 1 02:04:15 fantomas postfix/smtpd[31415]: warning:
restriction `reject_authenticated_sender_login_mismatch'
ignored
On 2022-05-04 at 12:20:49 UTC-0400 (Wed, 4 May 2022 18:20:49 +0200)
Matus UHLAR - fantomas
is rumored to have said:
I have tried to restrict users only to be able to send mail with
their own e-mail addresses.
(I am aware of difference between envelope from: and header From:
but I have
er reject_*sender_login_mismatch?
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- Have you got anything without Spam in it?
- Well, there'
mail from: using
check_sender_access.
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Christian Science Programming: "Let God Debug It!".
failed
Status: 5.7.26
Remote-MTA: DNS; gmail-smtp-in.l.google.com
Diagnostic-Code: SMTP; 550-5.7.26 This message does not have
authentication information or fails to
Last-Attempt-Date: Mon, 2 May 2022 09:24:27 -0700
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Warning:
LAIN LOGIN DIGEST-MD5
250-XXXA
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-PIPELINING
250-ETRN
250-DSN
250 XXXB
the second line may originally be "STARTTLS"
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Varo
>> > On 21.04.22 17:51, Matus UHLAR - fantomas wrote:
>> > >I'm trying to implement SRS using postsrsd. Since it always rewrites
>> > >non-local sender (even for incoming mail) I'm trying to restrict it
>> > >only for outgoing mail.
>Wietse Venem
> On 21.04.22 17:51, Matus UHLAR - fantomas wrote:
> >I'm trying to implement SRS using postsrsd. Since it always rewrites
> >non-local sender (even for incoming mail) I'm trying to restrict it
> >only for outgoing mail.
Wietse Venema:
SRS sender rewriting
bumping if anyone has a better idea.
On 21.04.22 17:51, Matus UHLAR - fantomas wrote:
I'm trying to implement SRS using postsrsd. Since it always rewrites
non-local sender (even for incoming mail) I'm trying to restrict it
only for outgoing mail.
I managed configuring local SMTP server
fabulously well abuse reports have worked with preventing
spam, don't we !!
As I said. Fail2ban is a waste of time whack-a-mole. Sure your logs might be
quieter, but quieter logs does not equal better security !
yes, cutting all clients' access is anything but lazy...
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cause signal 11
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- Have you got anything without Spam in it?
- Well, there's Spam egg sausage
by smtpd_tls_security_level
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
remove, as client is supposed to keep the data
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On 2022-04-21 17:51, Matus UHLAR - fantomas wrote:
I'm trying to keep configuration and mail flow as simple as possible.
On 22.04.22 01:44, Benny Pedersen wrote:
so dont use SRS ?
SRS is crucial to implement some functionalities our customers require.
Especially since google started
, if possible. Nobody should send mail
from domain that does not exist.
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Atheism is a non
mail flow as simple as possible.
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BSE = Mad Cow Desease ... BSA = Mad Software Producents Desease
ddresses, and server only needs
certificate for mail.example.org.
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You have the right to remain
On 2022-03-19 17:49, Matus UHLAR - fantomas wrote:
this should be fixable by using proxymap, better than disabling chroot
http://www.postfix.org/proxymap.8.html
On 20.03.22 17:29, Jesper Dybdal wrote:
Thanks. As far as I can see, I need to add
proxy:regexp:/etc/postfix
'postmap regexp:filename' is not useful:
postmap: fatal: unsupported dictionary type: regexp. Is the postfix-regexp
package installed?
given I know I have regexp installed.
On April 13, 2022 Matus UHLAR <- fantomas > wrote:
regexp and postfix-regexp are two different things.
s
ADER<<- opcode: QUERY, status: NXDOMAIN, id: 58935
;_domainkeys.gmail.dk. IN ANY
so: deny based SPF, no DKIM key, DMARC reject.
however, they miss the nullmx record:
gmail.dk. 300 IN MX 0 .
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, separate port of course
achieved via NAT)
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Nothing is fool-proof to a talented fool.
compiled with regexp map type, try running:
postconf -m
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Emacs is a complicated operating
there any possibility, if we see the first message, to put it in a
deferred status with this message ?
"status=deferred" does defer a message, but only the one you tried to
deliver.
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more than one reverse pointer per IP
the VPS (Digital Ocean) says it can't be done.
you can but it's rarely a good idea. And it's not a solution for the OP,
because his original PTR causes problems, which means he needs to replace
it, not to add another.
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for my IP address now points to the ISP's generic name
77-172-184-9.fixed.kpn.net
Could I solve this by setting smtp_helo_name in main.cf to
77-172-184-9.fixed.kpn.net ? Or is this a bad idea?
Op 11-04-22 om 16:17 schreef Matus UHLAR - fantomas:
this will not help your problem. many ISPs
way (without host=>IP resoluntion) by reject_unknown_reverse_client_hostname
the helo check is done by reject_unknown_helo_hostname.
however there are many mailservers who consider "77-172-184-9.fixed.kpn.net"
generic (because it contains the IP address) and refuse talking to server.
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reverse DNS format.
ask your ISP to change reverse DNS for your IP to mail.linetec.nl when
possible.
if not possible, you'll need external smtp server, or different ISP.
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it will not rewrite the sender
address and forwarding to my ISP fails.
On 8 Apr 2022, at 12:50 am, Matus UHLAR - fantomas wrote:
did amavis change the sender when used as milter?
i'm not sure milter supports changing sender…
On 08.04.22 09:10, Horst Simon wrote:
Haven't used milter for amavisd-new only
note groff HTML
conversion is bad; the ball is ~127KB, the optimized binary
package is 44KB on a GNU libc Linux system).
fyi, does this provide any functionality better than e.g. postscreen?
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. Is there
anything else I need to change in the postfix configuration to get this
working again?
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g. in a year) you can convert those redirects in virtual_alias_maps
to relocated.
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The only
rs and set their home directories to be the
same as their old ones, then also add new entries to the
check_client_access map. Does that make sense?
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Varovani
On Wed, Apr 06, 2022 at 07:33:41PM +0200, Matus UHLAR - fantomas wrote:
this is not an internal domain not out client, these are three subdomains of
remote domain/organization (different IPs from different IP range) I have no
relationship with.
I have created special transport for them
lt settings, which
>keep connections open only when they can be reused immediately.
Matus UHLAR - fantomas:
this unfortunately did not work without listing destinations explicitly in
smtp_connection_cache_destinations so I had big backlog of messages for
those domains, even if I set smtp_connectio
/vmail/user/Maildir but /var/mail*
note that different behaviour can be caused by:
- destination domain in virtual_mailbox_domains
- home_mailbox
- mailbox_command
etc.
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>Matus UHLAR - fantomas:
>> does prefix ".domain" apply for smtp_connection_cache_destinations?
>> (debian's 3.5.6 doesn't seem to accept that).
On 05.04.22 10:26, Wietse Venema wrote:
>Is it documented to support this?
>
>What is documented is that smtp_conne
u may want to have username maps in example.cloud do you don't accept
and forward non-existing addresses (I did this using LDAP lookups into the
customer's Active Directory)
that should work.
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Matus UHLAR - fantomas:
does prefix ".domain" apply for smtp_connection_cache_destinations?
(debian's 3.5.6 doesn't seem to accept that).
On 05.04.22 10:26, Wietse Venema wrote:
Is it documented to support this?
What is documented is that smtp_connection_cache_destinations
supports
dware).
I managed to aork around that domain by configuring special transport for
them and forching smtp caching for them.
I can name all those subdomains in smtp_connection_cache_destinations,
set smtp_connection_cache_on_demand=no, but supporting .subdomains would be
easier.
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http://www.postfix.org/access.5.html
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Emacs is a complicated operating system without good text
"Matus" == Matus UHLAR <- fantomas > writes:
Matus> the latter can be disabled by calling check_recipient_access
Matus> "user+whate...@example.com REJECT"
This is what I want to achieve and after reading the documentation at
http://www.postfix.org/RESTRICTION_CLA
eiver.
Am I missing the point here or is there a better way of doing this check and
reject those mails with the certain +whatever part
Thanks
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is not relevant to the client connection.
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Micro random number generator: 0, 0, 0, 4.33e+67, 0
UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
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Eagles may soar, but weasels don't get sucked into jet engines.
format into "sendmail -t".
why do you need copying?
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There's a long-standing bu
wildcard @example.com going to @example.com.onmicrosoft etc. but this
does not seem to work too well.
I was hoping to be able to use a transport re-write but if I set it up it
is ignored because of the virtual domain settings.
Does anyone have any recommendations on how to go about with
Received: header.
pyspf-milter is fine here, so should be policyd-spf-python (same source
package)
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clusion: As so often, it turns out that postfix, in this case
"milter_header_checks", can do what is needed. (Though it would be
even better if it also supported PREPEND.)
And thanks to Matus and PGNet Dev for interesting suggestions of
alternative solutions that I may need if
ation-Results" header.
I would now like to do something (e.g., reject) depending on that
header.
On 2022-03-18 13:07, Matus UHLAR - fantomas wrote:
opendmarc can reject itself, if you configure it to.
On 18.03.22 13:46, Jesper Dybdal wrote:
Thanks for your response.
If the version of
(s) before opendmarc.
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"One World. One Web. One Program." - Microsoft promotional adv
ike this:
...
list.dnswl.org=127.0.[0..255].[0..255]*-1
list.dnswl.org=127.0.[0..255].3*-1
so for *.3 responses (high) I expect -2 points this way.
I can change it if needed, although it won't be so nice this way
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Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
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=
zen.spamhaus.org=127.[0..255].[0..254].[0..255]*2
afaik no.
But, if you know you are forwarding DNS requests to any open DNS service,
it's better not to use spamhaus and other dnsbls at all.
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rn off all forwarding for servers.
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Your mouse has moved. Windows NT will now restart for chang
sense.
Other solution would of course be disabling SMTP connections from the world.
Would postscreen help in a situation like the above,
if the remote server is in some RBL?
yes.
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this since I knew they had
many domains on single IPs and all were setup with MX records pointing to
the domain name and not the host. It seems like it may be more trouble
for one domain.
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t server - perhaps add "mail.example.com" to
alternative names for certificate of that mailserver.
Otherwise their mail clients will complain about invalid certificate when they
connect to it.
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r from any errors )
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M$ Win's are shit, do not use it !
to the
server?
it does not need, it does not know, it does not care. Neither do
spammers/viruses.
I've encountered case where malware contacted nameservers of a domain to pass
mail to it, despite MX records pointed elsewhere.
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= next hop, not necessarily destination)?
postfix uses syslog by default, you can filter logs using syslog daemon.
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