On 29/11/2023 15:38, Viktor Dukhovni via Postfix-users wrote:
On Wed, Nov 29, 2023 at 03:00:24PM +1100, duluxoz via Postfix-users wrote:
I was reading an on-line guide about hardening Postfix and came across
a line that said that the Verify service could/should be turned off I
the master.cf
On Wed, Nov 29, 2023 at 03:00:24PM +1100, duluxoz via Postfix-users wrote:
> I was reading an on-line guide about hardening Postfix and came across
> a line that said that the Verify service could/should be turned off I
> the master.cf file.
>
> Is this actually good advice, or is there some
Hey All,
I was reading an on-line guide about hardening Postfix and came across a
line that said that the Verify service could/should be turned off I the
master.cf file.
Is this actually good advice, or is there some sort of "gotcha" hiding
in the background that'll bite us in the @rse?
On Tue, Nov 28, 2023 at 10:04:53PM -0500, John Levine via Postfix-users wrote:
> If a malformed mail message shows up by SMTP (not local sendmail or
> submission), will postfix generally try to clean it up or just
> pass it along?
You have to be a bit more specific. What does "malformed" mean?
If a malformed mail message shows up by SMTP (not local sendmail or
submission), will postfix generally try to clean it up or just
pass it along?
I see the cleanup program and all the options about when to run it and
what to tell it to do, but in practice, will a typical system clean
everything
Hello.
I was able to replicate this error, however it's not a misconfiguration
in Postfix, but rather a policy change by Google. I didn't notice the
bounce message sooner, since it was routed to my SPAM folder on Gmail.
If I use a GMAIL From: address and attempt to email another GMAIL
Linkcheck via Postfix-users:
> On 28/11/2023 3:07 pm, Bill Cole via Postfix-users wrote:
> > That's not a result, that's part of the DMARC policy
>
> Oh. Thank you for the correction, Bill. :)
>
> > That should not be enough...
>
> Something is wrong. I wonder if there is a DNS-resolving delay
Wietse Venema via Postfix-users:
> Vijay S Sarvepalli via Postfix-users:
> > Hello Postfix community,
> >
> > This may be a feature request. As far as I can tell it is currently
> > not possible to verify if an authenticated user has sent email
> > that uses a From: header (After DATA command)
On 28/11/2023 3:07 pm, Bill Cole via Postfix-users wrote:
That's not a result, that's part of the DMARC policy
Oh. Thank you for the correction, Bill. :)
> That should not be enough...
Something is wrong. I wonder if there is a DNS-resolving delay but I
guess Im not going to easily discover
On 2023-11-28 at 06:21:14 UTC-0500 (Tue, 28 Nov 2023 11:21:14 +)
Linkcheck via Postfix-users
is rumored to have said:
If it's only "largely redundant" I would expect G to possibly ignore
it but not fail on it.
The expectations of others are known to be poor predictors of GMail
behavior.
On 2023-11-28 at 06:15:47 UTC-0500 (Tue, 28 Nov 2023 11:15:47 +)
Linkcheck via Postfix-users
is rumored to have said:
The dmarc results are ambiguous:
r
That's not a result, that's part of the DMARC policy
pass
although dkim fails both tests.
So, DKIM signatures are failing.
On 2023-11-27 at 17:55:32 UTC-0500 (Mon, 27 Nov 2023 22:55:32 +)
Vijay S Sarvepalli via Postfix-users
is rumored to have said:
Hello Postfix community,
This may be a feature request. As far as I can tell it is currently
not possible to verify if an authenticated user has sent email that
> ipv6
I have...
inet_protocols = ipv4
... with no AAA record
But thanks anyway, Peter.
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If it's only "largely redundant" I would expect G to possibly ignore it
but not fail on it.
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The dmarc results are ambiguous:
r
pass
although dkim fails both tests.
=
google.com
noreply-dmarc-supp...@google.com
https://support.google.com/a/answer/2466580
10845692433607357330
1701043200
1701129599
Thanks for that, Matthew. So not all gmail ones fail. Hmm.
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Wietse Venema via Postfix-users writes:
> (...)
> gmail rejects all messsages with that sender domain name? Some
> messages? I have found that Gmail may treat some 'soft' errors (DNS
> timeout) as 'hard' errors. My workaround is to retry deliveries.
>
> /etc/postfix/main.cf:
> transport_maps
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