Re: password security

2022-04-25 Thread Ron Wheeler
mailserver? do you have any practical guide? What about multifactor authentication? thank you. -- Ron Wheeler Artifact Software 438-345-3369 rwhee...@artifact-software.com

Re: postqueue -f delayed

2020-10-26 Thread Ron Wheeler
ctive queue, e.g.: Oct 26 14:43:56 amnesiac postfix/qmgr[97795]: E0BFA3BC92C: from=, size=11617, nrcpt=1 (queue active) but perhaps your logging subsystem is losing messages. On Mon, Oct 26, 2020 at 04:22:21PM +, Pedro David Marco wrote: On Monday, October 26, 2020, 05:

Re: postqueue -f delayed

2020-10-26 Thread Ron Wheeler
I came through the ARPAnet-DECnet and 2780/3780 stream. On 2020-10-26 1:49 p.m., Peter Blair wrote: At 26 October, 2020 Ron Wheeler wrote: If you are very old, you will remember when networking was young and e-mail was sent over dial-up connections that connected only once or twice a day

Re: postqueue -f delayed

2020-10-26 Thread Ron Wheeler
where not "always on" so a successful send does not imply anything about time. Ron On 2020-10-26 12:44 p.m., Pedro David Marco wrote: >On Monday, October 26, 2020, 05:31:05 PM GMT+1, Ron Wheeler wrote: > >Could be just that the other end was busy receiving someone el

Re: postqueue -f delayed

2020-10-26 Thread Ron Wheeler
Could be just that the other end was busy receiving someone else's mail. Takes 2 to tango! No big attachments? On 2020-10-26 12:22 p.m., Pedro David Marco wrote: >On Monday, October 26, 2020, 05:09:41 PM GMT+1, Ron Wheeler wrote: >You might want to take a look at what is i

Re: postqueue -f delayed

2020-10-26 Thread Ron Wheeler
waiting for anything? is there any way for force it? Thanks... Pete. -- Ron Wheeler Artifact Software 438-345-3369 rwhee...@artifact-software.com

Re: Mail server without MX record.

2020-10-14 Thread Ron Wheeler
stfix. For Postfix, the "No Starch Press" book by Ralf Hildebrandt and Patrick Koetter is a good start, and may even get some of your DNS questions answered.  You can start there, and if you still have DNS questions, also read a DNS book. -- Ron Wheeler Artifact Software 438-345-3369 rw

Re: Mail server without MX record.

2020-10-14 Thread Ron Wheeler
ferent MX servers for different departments/machines, though now it seems they are using external services for MX (maybe lucky, I checked five and all were using google or outlook for MX). -- "Are you pondering what I'm pondering?" "I think so, Brain, but Tuesday Weld

Re: Mail server without MX record.

2020-10-13 Thread Ron Wheeler
mail operators may require one, but those are rare.     Wietse -- Ron Wheeler Artifact Software 438-345-3369 rwhee...@artifact-software.com

Re: I'm a beginner and want to setup Postfix on CentOS.

2020-10-12 Thread Ron Wheeler
06:18:10 PM GMT+3:30, IL Ka mailto:kazakevichi...@gmail.com>> wrote: > >> mynetworks = 127.0.0.0/8, My Public IP >> Trying ::1... > It could be that you are using IPv6 to connect while "mynetworks" is IPv4 address. > Try "telnet 127.0.0.1 25" > -- Ron Wheeler Artifact Software 438-345-3369 rwhee...@artifact-software.com

Re: Sender restriction to reject message with multiple from addresses

2020-10-09 Thread Ron Wheeler
dresses,could I generate a custom bouncing email message? If so, how should I proceed? * Which would be the real use case(s) where it would be useful to use multiple From addresses? Thanks a lot for your time and help, On Fri, Oct 9, 2020 at 2:10 PM Ron Wheeler wrote: You need to fix your contact

Re: Sender restriction to reject message with multiple from addresses

2020-10-09 Thread Ron Wheeler
website to put the email address of the person entering data in the form in the Reply-To: header. Kind regards, Tom -- Ron Wheeler Artifact Software 438-345-3369 rwhee...@artifact-software.com

Re: The historical roots of our computer terms

2020-06-07 Thread Ron Wheeler
less excluded and more interested in participating. Who cares if Pliny the Elder used it once, and he totally didn't mean it in a racist way, he probably had loads of black friends! -- Ron Wheeler Artifact Software 438-345-3369 rwhee...@artifact-software.com

Re: The historical roots of our computer terms

2020-06-07 Thread Ron Wheeler
as a black person is going to be exactly the same as any other race. The software won't run any differnetly just because you're black. -- Ron Wheeler Artifact Software 438-345-3369 rwhee...@artifact-software.com

Re: Ris: AWS timeout

2019-05-14 Thread Ron Wheeler
repeatedly > sends "QUIT". > > Anyway, something is breaking TCP and it isn't Postfix. Maybe the > VPN is trying to be too smart, maybe something in your TCP stack > is trying to shape traffic and messing up. > >       Wietse -- Ron Wheeler Artifact Software 438-345-3369 rwhee...@artifact-software.com

Re: Relaying to 2 SMTP servers

2019-04-17 Thread Ron Wheeler
What actual benefit are you trying to get from doing this? In what way do the 2 different servers differ in their behaviour? A little less cryptic description might actually get you some good information. Ron On 4/17/19 10:56 AM, sel...@linagora.com wrote: I want to forward an incoming mai

Re: Authentication attempts for x...@com.au addresses

2019-04-02 Thread Ron Wheeler
There does not seem to be a completely foolproof and easy to manage solution. In my case, I modified the fail2ban time in jail to block the IP for days rather than hours and did a close look at the expressions defining the bad attempts to be sure that I got all (I hope) of the cases that were

Re: Mails stuck in queue until inflow stops

2018-04-21 Thread Ron Wheeler
On 21/04/2018 8:07 AM, Ram wrote: On 04/21/2018 05:32 PM, Ron Wheeler wrote: On 21/04/2018 7:38 AM, Ram wrote: On 04/20/2018 07:39 PM, Wietse Venema wrote: Ram: On 04/20/2018 07:14 PM, Wietse Venema wrote: Ram: I have a very busy postfix server that acts as a relay. It gets mails from

Re: Mails stuck in queue until inflow stops

2018-04-21 Thread Ron Wheeler
ign=netcore-turns-20 I hope that you have no spam or virus checking on the inflow. -- Ron Wheeler President Artifact Software Inc email: rwhee...@artifact-software.com skype: ronaldmwheeler phone: 866-970-2435, ext 102

Re: Execute linux commands after receive a mail...

2017-03-17 Thread Ron Wheeler
uld certainly be _A_ way of doing IoT, I certainly wouldn't call it _THE_ way. Email is not particularly well-suited for command and control type applications. Lots of protocol and message overhead, high latency, unidirectional channels...overall not a great fit. --Sean -- Ron Wheeler Pr

Re: Postfix 20 years ago

2017-02-12 Thread Ron Wheeler
Postfix code... Amazing what a mighty oak has grown from such an acorn. Thanks to you for the original planting and to all those, including you, who have nurtured its growth, and continue to do so. -- Ron Wheeler President Artifact Software Inc email: rwhee...@artifact-software.com skype

Re: Stopping compromised accounts

2016-12-06 Thread Ron Wheeler
27;t submit any more mails. -- Ron Wheeler President Artifact Software Inc email: rwhee...@artifact-software.com skype: ronaldmwheeler phone: 866-970-2435, ext 102

Re: Was the Dovecot working well?

2016-11-15 Thread Ron Wheeler
On 15/11/2016 9:52 PM, Sean Greenslade wrote: 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'

Re: Was the Dovecot working well?

2016-11-15 Thread Ron Wheeler
errupted before the client sends its auth credentials, it looks the same as this type of scan. Basically, make sure users are using good, secure passwords, and make sure your software is all up to date. --Sean -- Ron Wheeler President Artifact Software Inc email: rwhee...@artifact-sof

Re: Webmin with Postfix: recommended or not.

2016-03-28 Thread Ron Wheeler
ere the problem may be on the client side. Ron -- Ron Wheeler President Artifact Software Inc email: rwhee...@artifact-software.com skype: ronaldmwheeler phone: 866-970-2435, ext 102

Re: Freelance to recommand?

2016-02-15 Thread Ron Wheeler
? There's plenty of experts here (not me I hasten to add!!) On 15/02/2016 8:52 pm, Roman Doe wrote: > I'm struggling finding a postfix expert, any contact to suggest? > > Thank you very much. -- Ron Wheeler President Artifact Sof

Re: 53% of Postfix servers are black-listed (DNSBL)

2015-12-29 Thread Ron Wheeler
too lazy (or not capable) of doing this. That being the case, I suggest you use a third party mail provider or learn how to configure Postfix On 29/12/2015 12:01 pm, sb wrote: > What is wrong with Postfix? -- Ron Wheeler President Artifact Software Inc email: rwhe

Re: Postfix and Mailman 2 virtual alias domain integration

2015-08-18 Thread Ron Wheeler
have a single IP address, say, 9.9.9.9, to which all domains are mapped. So how should the DNS records look? Can anyone give me the exact settings for the A, CNAME, MX, and PTR records for A.tld and B.tld (and any other suggested records)? Many thanks. Best, -Tom -- Ron Wheeler President Arti

Re: Accept external SMTP traffic only from MX hosts

2014-04-24 Thread Ron Wheeler
On 23/04/2014 7:43 PM, John Griessen wrote: On 04/23/2014 04:07 PM, Ron Wheeler wrote: Another approach to reduce SPAM would be to use fail2ban for a "reasonable" period to shut out IP addresses for a "reasonable" period that are sending a "lot" of SPAM in a &

Re: server side postfix tactics.

2014-04-24 Thread Ron Wheeler
People use phones with our e-mail setup. ( There are only a few dinosaurs using a desktop for communication). On 23/04/2014 11:14 PM, John Griessen wrote: On 04/23/2014 08:30 PM, Ron Wheeler wrote: If you are using Postfix, you will find the recipes in "The Book of Postfix" whic

Re: Accept external SMTP traffic only from MX hosts

2014-04-23 Thread Ron Wheeler
e Outlook and it all works with a simple set up. I hope that this helps. Ron On 23/04/2014 7:43 PM, John Griessen wrote: On 04/23/2014 04:07 PM, Ron Wheeler wrote: Another approach to reduce SPAM would be to use fail2ban for a "reasonable" period to shut out IP addresses for a "

Re: Accept external SMTP traffic only from MX hosts

2014-04-23 Thread Ron Wheeler
sts RECEIVE mail for a domain. They say nothing about what hosts should be SENDING mail for a domain. Many large ISPs use separate systems for receiving and sending mail. What you want to do will reject large quantities of legitimate mail. -- Larry Stone lston...@stonejongleux.com -- Ron

Re: Outgoing spam problem

2014-04-10 Thread Ron Wheeler
in strong attraction, no light escaped from it, and it could indeed become a gateway to another world. The next one. -- Ron Wheeler President Artifact Software Inc email: rwhee...@artifact-software.com skype: ronaldmwheeler phone: 866-970-2435, ext 102