On Fri, May 08, 2020 at 06:38:32PM +0200, michae...@rocketmail.com wrote:
> Hi all,
>
>
> I've a generic question to all more experienced than me postfix users here:
> Is it nowadays (reasonable) possible to run postfix with IPv6 only? E.g
> "mail.example.com" and "smtp.example.com" with only
On Fri, Mar 30, 2018 at 08:38:34AM +0200, Lorenzo Petracchi wrote:
> In the last few weeks our e-mail users are receiving many messages with
> their own address as From header.
>
> I understand that there are many legitimate reasons why the From header is
> free but I would like to understand if i
On Thu, Mar 16, 2017 at 05:48:49PM -0700, li...@lazygranch.com wrote:
> I had no idea you could receive email on any port. I wonder how many
> ISPs allow this.
Sure, you can run any service on any port. The default ports (e.g. 25
for SMTP) are simply there to make interoperability easy.
Most ISPs
On Tue, Nov 15, 2016 at 04:21:17AM -0500, Ron Wheeler wrote:
> Fail2ban might be able to do the whack-a-mole in a sensible manner that
> allowed for innocent interruptions but banned the bad guys
For the kind of attempts I typically see, F2B won't do much. It's
usually not a brute force type of at
On Mon, Nov 14, 2016 at 08:21:24PM -0800, vod vos wrote:
> so are there any configurations to auto ban this kind of visit, like postfix
> postscreen?
>
> or, I should write firewall rules to do the job?
I don't know if dovecot provides such functionality. I personally don't
bother, since it quic
On Mon, Nov 14, 2016 at 06:39:08PM -0800, vod vos wrote:
> Hi,
>
>
>
> when I read the mail.log, I found:
>
>
>
>
>
> Nov 14 14:45:45 mail dovecot: pop3-login: Disconnected (no auth attempts in 2
> secs): user=<>, rip=96.126.111.38, lip=108.61.22.11, TLS handshaking:
> SSL_accept() syscal
On Tue, Oct 04, 2016 at 05:37:33PM +1300, Peter wrote:
> The main problem with this is that one of the primary advantages to
> using a DNSRBL is that it sits in front of SpamAssassin. DNSRBL
> blockign does not require deep inspection of message content so it can
> be checked first and clients blo
On Mon, Oct 03, 2016 at 02:59:08PM -0400, Fongaboo wrote:
>
> On Mon, 3 Oct 2016, Sean Greenslade wrote:
>
> > I personally don't use RBLs as hard blocks. Instead, I have them set up
> > in my spam filter (SpamAssassin) with different weights. That way, if
> > on
On Mon, Oct 03, 2016 at 01:47:28PM -0400, Fongaboo wrote:
>
> I'm running Postfix 2.11.7 on FreeBSD 10.2-RELEASE.
>
> Just wanted to get folks' opinions/rationale/thoughts on behavior of some of
> the RBL's.
>
> Specifically SORBS.NET... I first set up my server using a popular FreeBSD
> tutoria
On Fri, Sep 23, 2016 at 07:25:26PM -0300, Rodrigo Cunha wrote:
> Message in ingles:
> Hello Julio, i want to create a product with postfix...but i dont know if
> this product is easy to sell.I think create a mail relays for mailmarketing
> products.Usualli my local customers uses google mail servic
On Fri, Sep 23, 2016 at 06:31:35PM -0300, Rodrigo Cunha wrote:
> Hello everybody,
> i'm from Brasil and i have a questions about business services with postfix
> in small costumers.
> I worked a postfix in helpdesk and suport, but i have today in my city many
> enterprises migration your services f
On Tue, Sep 20, 2016 at 12:03:37PM +0200, felderm wrote:
> Hi All
>
> We operate multiple Postfix instances behind HA-Proxies. The haproxy
> upstream protocol is enabled:
>
> smtpd_upstream_proxy_protocol=haproxy
> (the IPs of the HA-proxies are in mynetworks)
>
> There are brute-force attacks a
On Tue, Sep 20, 2016 at 05:30:27PM -0400, Alex Hall wrote:
>
> Bottom line: on one server, everything was great. On my company's virtual
> server, with the same configuration, packages, and settings, mail sent out
> is silently discarded by Gmail when delivered to anyone on the company's
> domain.
On Mon, Sep 05, 2016 at 08:17:40PM +0200, Sebastian Nielsen wrote:
> Sean Greenslade:
> Thats the responsibility of the server who is authorized to act on behalf of
> that domain.
Yes, however I am trying to make this discussion relevant to the OP's
question. Authenticating b
On Mon, Sep 05, 2016 at 07:23:10PM +0200, Sebastian Nielsen wrote:
> No, you're wrong. What the OP should do, is to enforce SPF/DKIM on
> specific RECEIVERS. For example, enforcing SPF/DKIM on for example
> webappad...@example.org.
It's important to remember what each step is actually authenticati
On Mon, Sep 05, 2016 at 07:52:02PM +0800, Eric Abrahamsen wrote:
> I have a postfix/dovecot installation on the same server as my company's
> webapp. This webapp involves a lot of regular data entry, which is a
> real pain to do using HTML forms. What I would really like to do is be
> able to send
On Sat, Aug 27, 2016 at 05:27:18PM +0300, Nikolaos Milas wrote:
> Thank you Sean for all your help.
>
> I am focusing on amavisd-new / spamassassin for my efforts.
>
> I have started a thread in the amavisd-new users mailing list, since
> bayesian filtering is off-topic here.
>
> However, before
On Thu, Aug 25, 2016 at 05:28:35PM +0300, Nikolaos Milas wrote:
> On 23/8/2016 11:58 μμ, Sean Greenslade wrote:
>
> > Hope this is helpful,
>
> Thanks Sean for your time and eagerness to help. I appreciate it.
>
> I am planning to try your suggestions.
>
> I am
On Tue, Aug 23, 2016 at 11:27:39PM +0300, Nikolaos Milas wrote:
> On 20/8/2016 7:56 μμ, Sean Greenslade wrote:
>
> > ...
> > - Enable & configure per-user bayesan filtering
> > - Increase allowed storage space for bayesan databases
> > - Update a particular per
On Fri, Aug 19, 2016 at 04:30:38PM +0300, Nikolaos Milas wrote:
>
> We are already using postscreen, many RBLs, the fqrdns.pcre, amavis,
> spamassassin with scamp and we are filtering about 60-70% of total incoming
> mail as spam, but there is still much more that should be filtered out.
>
> Any
On August 16, 2016 4:52:22 PM EDT, Keith Williams wrote:
>Hi Sean,
>
>Thank you for your advise, your folder solution is brilliant and
>simple.
>Sometimes I tend to over think the problem.
>
>That is going to work perfectly for my users.
>
>Regards,
Glad I could help.
--Sean
On Tue, Aug 16, 2016 at 08:22:54PM +0200, Keith Williams wrote:
> Hi all,
>
> I was wondering if someone might be able to point me in the right direction
> as my searches proved fruitless.
>
> I am looking for a email verification system for postfix, but with a twist.
> Not referring to http://ww
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