It appears that Scott Techlist via Postfix-users said:
>Apologies in advance for the slightly OT question. I've used Postfix since
>the beginning on a relatively small server. I was thankful when Let's Encrypt
>made it possible for me to automate and have "real" certs vs the pain of
>having to
It appears that Bill Cole via Postfix-users
said:
>You could easily turn on SMB file sharing on that OS X machine. iOS has
>builtin SMB support via the Files app and while I don't really track
>Android capabilities, I am sure that if there isn't a builtin SMB
>client, there has to be an app.
It appears that Bill Cole via Postfix-users
said:
>What sort of "support" would you expect to see in a MTA?
When that RFC was published a lot of us were sceptical that anyone would use
the Author header
since there had been no interest whatsoever from any MTA or MUA developers or
operators.
A
It appears that Wietse Venema via Postfix-users said:
>3 - Wait until IETF issues guidelines for converting messages (and
>envelopes) from SMTPUTF8 to legacy format.
We did, it didn't work, it's mostly deprecated, and nobody does it.
See RFCs 5335 and 5336 for the failed experiment to put ba
It appears that A. Schulze via Postfix-users said:
>
>
>Am 01.12.24 um 17:07 schrieb Wietse Venema via Postfix-users:
>> The remote server announces SMTPUTF8, but Postfix does not request
>> SMTPUTF8. It is as if the SMTP client has "smtputf8_enable = no".
>
>Hello Wietse,
>
>I don't think it's an
It appears that Florian Piekert via Postfix-users said:
>AFAIK you can't use the "doma.in" DKIM Key for signing "sub.doma.in" eMails.
>You need to add a separate key in the DNS file
>- which in this case you can't.
Sorry, that's just wrong. You can put a DKIM signature with any d= domain on any
We have a bunch of role addresses that we forward to the people in the role.
If the messages have DKIM signatures, it works reasonably well since the
signatures
stay valid. But if they don't, mail systems like Gmail reject them becahse
there
is no DKIM and SPF fails. So I would like to change
It appears that Wesley via Postfix-users said:
>i know there is is a kind of wild certificate for *.example.com.
>besides that, is it possible to setup multiple separated hosts/certs in
>postfix?
Somebody else suggested getting a cert with multiple names, which is a reaonable
approach if the num
It appears that Laura Smith via Postfix-users
said:
>
>
>
>> My doubt is that since the outgoing email server identifies itself as
>> host1.example.com in the EHLO, is there a requirement or even an
>> expectation that postmas...@example.com will be able to receive email.
>
>
>I think the reality
It appears that John Fawcett via Postfix-users said:
>I didn't see anywhere what your value of smtpd_sasl_type is (as
>applicable to the sasl type used by the smtp server.
Bingo. Thanks.
In my defence, if you look at https://www.postfix.org/postconf.5.html
which purports to list all of the mai
According to Viktor Dukhovni via Postfix-users :
>I don't recommend running "saslauthd" as the "postfix" user, better to
>create a suitable dedicated user instead.
OK, I'll invent a user. Perhaps if we can get Scott to undo the control file
move he can add a sasl user at the same time.
>> Other
I think these are the main things I learned:
* Debian moved the sasl configuration file to a nonstandard place
/etc/postfix/sasl/smtpd.conf
Dunno how I would have figured that out if someone here hadn't told me.
* The socket that the sasl daemon uses has to be inside the postfix
chroot, by defaul
It appears that Patrick Ben Koetter via Postfix-users said:
>IIRC Debian patches Postfix and expects smtpd.conf to be located in
>/etc/postfix/sasl/smtpd.conf. Have you tried this?
I just did and it worked.
Thanks, everyone. Now I have to back out my hacks one by one and make sure
I understand
It appears that Viktor Dukhovni via Postfix-users
said:
>Have you posted "postconf -nf" and "postconf -Mf" output (with as-is
>whitespace, including line-breaks)?
I will, see below.
>> But when I try to get postfix to authenticate, I cannot get it even to talk
>> to
>> the daemon.
>
>What's th
I'm trying to set up a little POP toaster on debian that has a few addreses all
in virtual domains.
I'm using Cyrus SASL (no Dovecot allowed for reasons) and to keep it
simple, I'm using sasldb authentication. I can set up the sasldb with
saslpasswd2 but I am stuck getting the Cyrus sasl daemon t
It appears that Emmanuel Fusté via Postfix-users said:
>In the general case (not null sender), HELO SPF validation does not
>interfere with DMARC as DMARC only use the MAIL FROM identity.
>There was historically a bug in some DMARC implementation witch evaluate
>whatever SPF identity check that
It appears that Peter via Postfix-users said:
>On 19/06/24 18:51, Tan Mientras via Postfix-users wrote:
>> Hi
>>
>> *Trying to setup email REJECT when users try to send to a no-reply email.*
>
>There is no such thing as a no-reply email, there is no part of the
>email specification that allows a
It appears that Matus UHLAR - fantomas via Postfix-users
said:
>If one of recipients wants to accept mail from a sender while another
>recipient doesn't, teoretically you can reject that sender at recipient
>level, but that complicates configuration (but it's possible).
>This would mean that fo
People I'm working with have a short list of addresses from which they
don't want to accept mail at all, and they'd like to reject as early
as possible without running it through anti-spam milters, ideally by
rejecting the SMTP MAIL FROM command. What's the best way to do this?
The list is short so
It appears that Steffen Nurpmeso via Postfix-users said:
W> |I did not want to insult you!
> |In mind i had these canon..py snippets
> |
> | def strip_trailing_whitespace(content):
> |return re.sub(b"[\t ]+\r\n", b"\r\n", content)
> |
> |
> | def compress_whitespace(content):
> |return r
It appears that Viktor Dukhovni via Postfix-users
said:
>On Wed, Apr 24, 2024 at 01:01:46AM -0000, John Levine via Postfix-users wrote:
>
>> >I must be interpreting this wrong because it appears postfix is not
>> >accepting that. Here is the complete process. A messa
According to Doug Hardie via Postfix-users :
>I must be interpreting this wrong because it appears postfix is not accepting
>that. Here is the complete process. A message arrives at my MTA addressed to
>a specific address. Postfix delivers that
>message to a pipe to my process which reads the
Here's another question that might be answered in the documentation
but I can't find it. If I have a file delivery like this in
the /etc/aliases file
foo: /a/b/somefile
what userid writes to the file? postfix? nobody?
I realize that for user mailboxes it's the user, but
in this case, there's n
I am trying to tidy up a complicated and messy postfix config that has
all the issues you'd expect in one that has been twiddled by many
people over a decade to handle multiple sort of related mail streams.
Today's issue is ensuring that we only do submission rewrites on
outgoing mail, not incomin
It appears that Joachim Lindenberg via Postfix-users
said:
>Hello John,
>are you willing to share what direction you/IETF are working towards?
It's the EMAILCORE working group. You can see the documents here:
https://datatracker.ietf.org/wg/emailcore/documents/
>What I am really missing is cl
It appears that Phil Biggs via Postfix-users said:
>Where do see the "mandatory" requirement?
>
>Section 4.1.1.8 says:
>
> SMTP servers SHOULD support HELP without arguments and MAY support it
> with arguments.
SHOULD is IETF-ese for you have to, except that there might be reasons
not to d
Over in the IETF we're slowly working on updating RFC 5321.
Today's topic is the HELP command. The current spec says that it is
mandatory to implment it. Most MTAs implement it by returning a fixed
string, or something close to fixed, e.g., gmail's answer appears to
include a code that tells you w
This paper describes a clever hack that uses defective line endings to embed
a second SMTP session inside a first one, which has the practical effect
of letting you send fake authenticated mail from anyone else who uses the
same mail system you do. If that system is MS Outlook, that's a lot of peo
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 up
It appears that Viktor Dukhovni via Postfix-users
said:
>Postfix supports DANE, but there's no MTA-STS support. And I've not
>seen much by way of receiving MTAs advertising REQUIRETLS as a
>capability
I did a proof of concept implementation that advertises REQUIRETLS and then
ignores it.
As I
It appears that Tom Reed via Postfix-users said:
>Since the message was sent to mailing list which rewrites envelope address
>and adds list signature, so:
>
>1) SPF for header From: address won't get pass due to SRS.
>2) DKIM won't get pass due to list signature.
>
>So the DMARC failed totally and
It appears that Jaroslaw Rafa via Postfix-users said:
>Dnia 16.04.2023 o godz. 16:32:41 Gerald Galster via Postfix-users pisze:
>>
>> Mails classified as spam or external forwards seemingly take another route
>> via mout-xforward.web.de. These servers are SBL-listed by intention, most
>> likely b
It appears that tom--- via Postfix-users said:
>$ dig -x 82.165.159.35 +short
>mout-xforward.web.de.
>
>Can anyone from web.de help with this?
The only people who should be able to send mail through that server are web.de
customers.
If you are a customer, what happened when you contacted them t
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