[pfx] Re: Open relay clarification

2023-04-22 Thread Tyler Montney via Postfix-users
e reliability of the system. If I have a problem with this layout, I'd have to argue elsewhere. No one so far seems particularly surprised by my findings, and I mostly expected this. However, this has given me a few items to explore with the provider that I didn't have before. On Wed, Apr 19, 2023 at 4:

[pfx] Re: Open relay clarification

2023-04-18 Thread Tyler Montney via Postfix-users
"misguided attempt to secure SMTP [leading to more problems]"). Perhaps because you could easily forge a submission as a relay? On Tue, Apr 18, 2023 at 6:23 AM Jaroslaw Rafa via Postfix-users < postfix-users@postfix.org> wrote: > Dnia 17.04.2023 o godz. 19:59:48 Tyler Mo

[pfx] Re: Open relay clarification

2023-04-17 Thread Tyler Montney via Postfix-users
ort 25, or no authentication is allowed on > port 465 or 587, someone has misconfigured something. On Mon, Apr 17, 2023 at 4:58 PM Jaroslaw Rafa via Postfix-users < postfix-users@postfix.org> wrote: > Dnia 17.04.2023 o godz. 14:49:11 Noel Jones via Postfix-users pisze: > > Please

[pfx] Re: Open relay clarification

2023-04-17 Thread Tyler Montney via Postfix-users
hy rely entirely on your spam filter (or unknown mitigations) when a common feature such as authentication will do the job? Why the risk? On Mon, Apr 17, 2023 at 2:49 PM Noel Jones via Postfix-users < postfix-users@postfix.org> wrote: > Please keep replies on list. > > On 4/17/2023 2:1

[pfx] Open relay clarification

2023-04-17 Thread Tyler Montney via Postfix-users
Before getting started, this has been publicly disclosed by someone else a while ago. However, I still don't think it's necessary to name the organization to explain myself. My goal here is not only to give a proper argument to the provider, but also my own curiosity and research (on the workings

Re: Setting up virtual mail users

2021-12-06 Thread Tyler Montney
/configuration_manual/mail_location/ Hide quoted text On Sat, Dec 4, 2021 at 12:34 PM Tyler Montney wrote: > reading in the documentation that user home folders are highly recommended Who (Dovecot or Postfix) and where? As for my configuration, I use /srv/vmail. Just personal preference. Assuming we

Re: RCPT info in logging

2021-11-25 Thread Tyler Montney
For 3.6.2 (from source) may influence this, but I am seeing enough to identify without any change in mail.log: > Nov 25 18:57:01 mail postfix/smtpd[2814]: NOQUEUE: reject: RCPT from localhost[127.0.0.1]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo= However,

Re: RCPT info in logging

2021-11-25 Thread Tyler Montney
Not a direct answer but the domain in question has an Email verification API. They are definitely probing for valid users. I wonder if there's ever a valid use case for this. However, if you wanted to allow you would just enable the VERIFY feature. On Thu, Nov 25, 2021, 12:19 PM wrote: > I am

Re: Various questions about Postfix

2021-11-19 Thread Tyler Montney
Missed this one: > message_size_limit = 52428800 > virtual_mailbox_limit = 524288 > > message_size_limit needs to be less than or equal to > virtual_mailbox_limit. Your virtual_mailbox_limit is > 100 times message_size_limit. Not intentional, definitely a typo. I think early on I saw

Re: Various questions about Postfix

2021-11-12 Thread Tyler Montney
"You seem to be explicitly setting many parameters to their defaults." I removed a bunch, but might have missed some. That "command_directory" parameter I definitely didn't set. I think that's a result of building from source. "You have the address mappings happening before, which means that

Re: Various questions about Postfix

2021-11-06 Thread Tyler Montney
t_limit=0 -o smtpd_client_connection_rate_limit=0 -o receive_override_options=no_header_body_checks,no_unknown_recipient_checks,no_address_mappings On Sun, Oct 17, 2021 at 6:25 PM raf wrote: > On Fri, Oct 15, 2021 at 12:20:55PM -0500, Tyler Montney < > montneyty...@gmail.com> wrote: &

Re: Various questions about Postfix

2021-10-15 Thread Tyler Montney
One other thing while I wait... Once I'm done researching (in a week or two), I'd like someone to provide a sanity check on my Postfix config by posting it here. Is that allowed? On Fri, Oct 15, 2021 at 1:13 AM Viktor Dukhovni wrote: > On Fri, Oct 15, 2021 at 12:53:03AM -0500, Tyler Mont

Re: Various questions about Postfix

2021-10-15 Thread Tyler Montney
I'll give that book a try and return to this thread with any remaining questions. On Fri, Oct 15, 2021, 1:13 AM Viktor Dukhovni wrote: > On Fri, Oct 15, 2021 at 12:53:03AM -0500, Tyler Montney wrote: > > > Perfect, all of that makes sense. Here's 3 more: > > You might try t

Re: Various questions about Postfix

2021-10-14 Thread Tyler Montney
/trace - Is there any documentation for the service 'relay'? On Fri, Oct 15, 2021 at 12:25 AM Viktor Dukhovni wrote: > On Fri, Oct 15, 2021 at 12:15:23AM -0500, Tyler Montney wrote: > > > So by private, you mean services that end users shouldn't be able to > > interact with? Pu

Re: Various questions about Postfix

2021-10-14 Thread Tyler Montney
some kind of maintenance tasks? On Thu, Oct 14, 2021, 11:45 PM Viktor Dukhovni wrote: > On Thu, Oct 14, 2021 at 09:12:40PM -0500, Tyler Montney wrote: > > > I am doing a deep dive on mail hosting and this includes Postfix. I have > > quite a number of questions about Postfix

Various questions about Postfix

2021-10-14 Thread Tyler Montney
I am doing a deep dive on mail hosting and this includes Postfix. I have quite a number of questions about Postfix. Is this the best place to get those answered? To give a sample: - What does 'private' mean for master.cf? Documentation is quite scarce. I can tell it doesn't apply to inet,