On 4/6/2015 5:31 AM, Sebastian Nielsen sebast...@sebbe.eu wrote:
IMHO I find it better to only allow submission from trusted nets.
So, you prefer to cripple your users by not allowing them to send email
when outside the office?
Better to disable authentication completely, and completely
On Mon, Apr 27, 2015 at 12:36:19PM -0400, Charles Marcus wrote:
On 4/6/2015 5:31 AM, Sebastian Nielsen sebast...@sebbe.eu wrote:
IMHO I find it better to only allow submission from trusted nets.
So, you prefer to cripple your users by not allowing them to send email
when outside the
Thanks Noel and Peter i learned alot from both of your posts.
by Noel
For new installations, it is strongly recommended to require your
customers to use port 587 (or 465) and to disable AUTH on port 25.
can you please refer any document on this or any link. actually this is
what i
: port 25 465 and 587 confusion.
On 04/06/2015 08:05 PM, Muhammad Yousuf Khan wrote:
By Peter
-
What you should be, at the very least, encouraging is STARTTLS over
port
587. Whether you want to support some very old Outlook clients and
offer TLS wrappermode over 465 is up
On 04/06/2015 08:05 PM, Muhammad Yousuf Khan wrote:
By Peter
-
What you should be, at the very least, encouraging is STARTTLS over port
587. Whether you want to support some very old Outlook clients and
offer TLS wrappermode over 465 is up to you but it is unlikely
On 2015-04-06 14:27, Muhammad Yousuf Khan wrote:
in light of your above suggestions. i enabled
smtp inet n - - - - smtpd
#smtp inet n - - - 1 postscreen
#smtpd pass - - - - - smtpd
...@gmail.com
*Sent:* Monday, April 06, 2015 2:27 PM
*To:* Peter pe...@pajamian.dhs.org
*Cc:* Postfix users postfix-users@postfix.org
*Subject:* Re: port 25 465 and 587 confusion.
@Peter
Right, you really should not be allowing submission on port 25 at all.
and is this segregation is a good
@Peter
Right, you really should not be allowing submission on port 25 at all.
and is this segregation is a good thought of mine or practical?
Yes
isn't 465 is useless and can i close this if yes then how?
That depends on if you have users that have very old versions of Outlook
which
that particular ISP.
Users outside that network simply has to use their webmail, which does have
more protections in form of captchas and such.
From: Muhammad Yousuf Khan
Sent: Monday, April 06, 2015 2:27 PM
To: Peter
Cc: Postfix users
Subject: Re: port 25 465 and 587 confusion.
@Peter
On 4/5/2015 12:42 PM, Muhammad Yousuf Khan wrote:
Thanks Chirs,
Please correct me if i am wrong. just sharing this if my concept is
correct.
port 25 is to send email b/w mailservers.
Yes, port 25 is required for MTA to MTA mail transfer.
Opportunistic STARTTLS should be enabled, but must
On 04/06/2015 05:42 AM, Muhammad Yousuf Khan wrote:
port 25 is to send email b/w mailservers.
Correct.
if my client(e.g. outlook)
wants to send email it must use port 465 and 587
No, it *should* use 587. It is possible to set up port 25 for mail
submission but not recommended, that's simply
On 04/06/2015 11:33 AM, Peter wrote:
Thunderbird, for example, calls TLS wrappermode TLS
Correction: Thunderbird calls TLS wrappermode SSL/TLS.
Peter
On Sun, Apr 05, 2015 at 06:05:20PM -0500, Noel Jones wrote:
Many sites enable port 465 as a convenience to their customers since
it doesn't cost anything nor significantly affect security. Other
refuse to enable port 465 for philosophical reasons.
This could change, there is early stage work
i am working on postfix and very new to it. just trying to learn but need
to clear my confusion.
i had read alot about all 3 ports and they are confusing me a bit now.
please help me to understand conceptually how things are working
differently on different ports.
my mail server is listening on
Once upon a time, Muhammad Yousuf Khan sir...@gmail.com said:
now the confusion part is my concept. does port 25 and 465 work together
like FTP. port 21 and 20. like 1 port is for negotiate and another port is
for data?
Port 25 is tradtiotional SMTP, aimed at server-server communications
now
On Sun, 5 Apr 2015 19:21:00 +0500
Muhammad Yousuf Khan sir...@gmail.com wrote:
now the confusion part is my concept. does port 25 and 465 work
together like FTP. port 21 and 20. like 1 port is for negotiate and
another port is for data?
Thank ${DIETY} that of all the common protocols nothing
Thanks Chirs,
Please correct me if i am wrong. just sharing this if my concept is correct.
port 25 is to send email b/w mailservers. if my client(e.g. outlook) wants
to send email it must use port 465 and 587 for security.
port 465 is for SSL Wraped SMTP port but can also be used with TLS
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