[pfx] Re: secondary MX server

fh--- via Postfix-users: > > > > > If I remember correctly, someone mentioned NoListing recently on that > > list. > > For this, you *need* a secondary MX, and it is actually your main mail > > server - the primary MX never accepts mail... > > Hallo, > > 1. what's the advantage of this archite

[pfx] Re: secondary MX server

If I remember correctly, someone mentioned NoListing recently on that list. For this, you *need* a secondary MX, and it is actually your main mail server - the primary MX never accepts mail... Hallo, 1. what's the advantage of this architecture? 2. how to make primary MX not accepting mes

[pfx] Re: secondary MX server

On 2/04/23 09:03, Jaroslaw Rafa via Postfix-users wrote: Dnia 1.04.2023 o godz. 13:04:30 Peter via Postfix-users pisze: Secondary, or backup MXes are almost never recommended in the modern internet and tend to be a relic of the 1990s dialup internet. [...] None of this is what you are consid

[pfx] Re: secondary MX server

Dnia 1.04.2023 o godz. 13:04:30 Peter via Postfix-users pisze: > > Secondary, or backup MXes are almost never recommended in the modern > internet and tend to be a relic of the 1990s dialup internet. [...] > None of this is what you are considering. If you still want to > implement a secondary M

[pfx] Re: secondary MX server

Corey Hickman via Postfix-users writes: > Hello, > > Since almost every sending MTA has the queues, do I need a secondary > MX for my domain email? > > I am afraid the secondary MX was abused by spammers. > > Thanks. I am now running secondary mx. It is valuable for me. Use MTA-STS (testing is

[pfx] Re: secondary MX server

On 01/04/2023 08:04, Peter via Postfix-users wrote: On 1/04/23 00:36, Corey Hickman via Postfix-users wrote: Since almost every sending MTA has the queues, do I need a secondary MX for my domain email? Secondary, or backup MXes are almost never recommended in the modern internet and tend to be

[pfx] Re: secondary MX server

On 1/04/23 00:36, Corey Hickman via Postfix-users wrote: Since almost every sending MTA has the queues, do I need a secondary MX for my domain email? Secondary, or backup MXes are almost never recommended in the modern internet and tend to be a relic of the 1990s dialup internet. What is oft

[pfx] Re: [ext] secondary MX server

* Corey Hickman via Postfix-users : > Since almost every sending MTA has the queues, do I need a secondary MX for > my domain email? I don't know if the RFC mandate it, but nowadays everbody knows better, so WTF. > I am afraid the secondary MX was abused by spammers. Indeed. The secondary basic

[pfx] secondary MX server

Hello, Since almost every sending MTA has the queues, do I need a secondary MX for my domain email? I am afraid the secondary MX was abused by spammers. Thanks. ___ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email

Re: How to setup the secondary MX server

This is a perfect example of why NOT to use Google for your first resort in asking questions! The linked howto is very bad, and it will make your new secondary MX host a spam magnet. You are absolutely correct. I wrongly assumed that antispam/antivirus measures was something that everyone imp

Re: How to setup the secondary MX server

On 9/15/2022 8:45 AM, I wrote: The concept of "secondary MX" dates way back to pre-spam days. I think it can safely be considered an outmoded idea at this point. But if you insist on doing it, make sure that you use:   * Recipient validation   * Identical anti-spam controls on both hosts

Re: How to setup the secondary MX server

On Wed, Sep 14 2022 at 07:10:57 PM +0800, Henrik Pang wrote: Hello, Is there a guide for adding a secondary MX with postfix? the secondary MX would forward messages to the main MX. When the main MX was in failure, the secondary MX should hold messages for some time. On 9/14/2022 6:14 AM, Jon

Re: How to setup the secondary MX server

On 14.09.22 13:14, Jonathan Sélea wrote: Here you go: The first result on Google ;) I would add address verification check: http://www.postfix.org/ADDRESS_VERIFICATION_README.html ...but set unverified_recipient_defer_code to 250 to accept mail

Re: How to setup the secondary MX server

Here you go: The first result on Google ;) -- Jonathan Sélea Website: https://jonathanselea.se PGP Key: 0x8B35B3C894B964DD Fingerprint: 4AF2 10DE 996B 673C 0FD8 AFA0 8B35 B3C8 94B9 64DD On Wed, Sep 14 2022 at 07:10:57 PM +0800, Henrik Pang wrot

How to setup the secondary MX server

Hello, Is there a guide for adding a secondary MX with postfix? the secondary MX would forward messages to the main MX. When the main MX was in failure, the secondary MX should hold messages for some time. Thank you.

Re: secondary MX Server

G?nther J. Niederwimmer: > The second MX shout have also dovecot and all the Mails that is clear? No. Secondary MXes forward email to primary MXes. If you want something else, don't call it secondary MX. That term already has common usage. RFC 5321 A relay SMTP server is usually the target o

Re: secondary MX Server

> On Jun 6, 2019, at 6:48 AM, Günther J. Niederwimmer > wrote: > > Now I like to create a secondary postfix for my system. > > What are the best to realize, have this two servers in sync? > > I have enable postscreen, all I found on Internet, is to have installed > memcache is this correct? > >

Re: secondary MX Server

Am Freitag, 7. Juni 2019, 05:10:09 CEST schrieb Durga Prasad Malyala: > On Fri, Jun 7, 2019, 08:05 Viktor Dukhovni > > wrote: > > > On Jun 6, 2019, at 6:48 AM, Günther J. Niederwimmer > > > > wrote: > > > Now I like to create a secondary postfix for my system. > > > > > > What are the best to

Re: secondary MX Server

Am Freitag, 7. Juni 2019, 04:21:49 CEST schrieb Viktor Dukhovni: > > On Jun 6, 2019, at 6:48 AM, Günther J. Niederwimmer > > wrote: > > > > Now I like to create a secondary postfix for my system. > > > > What are the best to realize, have this two servers in sync? > > > > I have enable postscre

Re: secondary MX Server

On Fri, Jun 7, 2019, 08:05 Viktor Dukhovni wrote: > > > On Jun 6, 2019, at 6:48 AM, Günther J. Niederwimmer > wrote: > > > > Now I like to create a secondary postfix for my system. > > > > What are the best to realize, have this two servers in sync? > > > > I have enable postscreen, all I found

Re: secondary MX Server

> On Jun 6, 2019, at 6:48 AM, Günther J. Niederwimmer wrote: > > Now I like to create a secondary postfix for my system. > > What are the best to realize, have this two servers in sync? > > I have enable postscreen, all I found on Internet, is to have installed > memcache is this correct? >

secondary MX Server

Hello, postfix 3.4.5 i mean i have a correct running postfix server. ;-) Now I like to create a secondary postfix for my system. What are the best to realize, have this two servers in sync? I have enable postscreen, all I found on Internet, is to have installed memcache is this correct? But

Re: Backup Mailserver -Secondary MX server

s happen all the time in different parts of the Internet. As the result of outages in intermediate networks, the primary MX server will be reachable for most clients but unreachable for others. Therefore, the secondary MX server will see legitimate connections while the primary MX server is up. Se

Backup Mailserver -Secondary MX server

ce on what to use or where to start reading, I would appreciate it. And yes, sorry for the subject line yet again... It seems that secondary MX server might be a better description? -- John Hinton 877-777-1407 ext 502 http://www.ew3d.com Comprehensive Online Solutions

Re: Accepting messages only for valid users in a secondary MX server

Santiago Romero wrote: Now I have a nice hash file with all the valid accounts, but ... How do I deal in a relay_recipient_maps file with qmail's mailing list addresses? How does qmail know that an address is valid or not? If a Postfix maptype can be invented that reads that type of

Re: Accepting messages only for valid users in a secondary MX server

Now I have a nice hash file with all the valid accounts, but ... How do I deal in a relay_recipient_maps file with qmail's mailing list addresses? How does qmail know that an address is valid or not? If a Postfix maptype can be invented that reads that type of file, then it could be q

Re: Accepting messages only for valid users in a secondary MX server

Santiago Romero: > Now I have a nice hash file with all the valid accounts, but ... > > How do I deal in a relay_recipient_maps file with qmail's mailing list > addresses? How does qmail know that an address is valid or not? If a Postfix maptype can be invented that reads that type of file, th

Re: Accepting messages only for valid users in a secondary MX server

The list if valid recipients in those domains is specified in relay_recipient_maps. Specify one or more map files listing the valid recipients; all other recipients are rejected. http://www.postfix.org/postconf.5.html#relay_recipient_maps If this file is scp'ed as a plain text file, you wil

Re: Accepting messages only for valid users in a secondary MX server

Santiago Romero wrote: Postfix calls domains that it accepts mail for but delivers elsewhere (such as MX backups) relay_domains. You can use a plain text file or any supported postfix map type. The list if valid recipients in those domains is specified in relay_recipient_maps. Specify one

Re: Accepting messages only for valid users in a secondary MX server

Postfix calls domains that it accepts mail for but delivers elsewhere (such as MX backups) relay_domains. You can use a plain text file or any supported postfix map type. The list if valid recipients in those domains is specified in relay_recipient_maps. Specify one or more map files listi

Re: Accepting messages only for valid users in a secondary MX server

Santiago Romero wrote: To summarize it, currently I have 2 files called: valid_accounts.txt: a list of valid accounts in the primary MX. domains_to_check_user.txt: Holds a list of domains. Server only checks RCPT against valid_accounts.txt for the domains present in this file. When a new emai

Re: Accepting messages only for valid users in a secondary MX server

On Mon, Feb 23, 2009 at 05:01:09PM CET, Santiago Romero said: > > Hi. > > I have a secondary MX server with qmail that I'm migrating to postfix. > Currently, my qmail server checks RCPT TO addresses against a plain text > file that contains all the valid email a

Accepting messages only for valid users in a secondary MX server

Hi. I have a secondary MX server with qmail that I'm migrating to postfix. Currently, my qmail server checks RCPT TO addresses against a plain text file that contains all the valid email accounts for some of the domains that is making MX-backup for. That "plain-text" file is