Re: domain email handled by postfix

documentation. Miles Fidelman -- In theory, there is no difference between theory and practice. In practice, there is. Yogi Berra Theory is when you know everything but nothing works. Practice is when everything works but no one knows why. In our lab, theory and practice are combined

Re: Forwarding best practices

ains, and not putting myself in the position where a vendor can lock me in. Miles Fidelman -- In theory, there is no difference between theory and practice. In practice, there is. Yogi Berra Theory is when you know everything but nothing works. Practice is when everything works but no one knows

Re: copy of mails with specific From-field

On 9/27/19 7:20 AM, Cedric Freiberger wrote: Hello, how can I put copies of outgoing mails with specific From-fields in the outgoing-folder of a specific user? Big fan of procmail.  Or something that handles seive.  Or just sorting rules in a good mail client. Miles Fidelman

Re: DMARC mitigation for mailing list server

Perhaps you need to play with your Listserv configuration a bit. Perhaps you need an updated version. It really isn't a Postfix issue at all. Miles Fidelman (happily running Sympa, survived DMARC, so far) -- In theory, there is no difference between theory and practice. In practice, there is. Yo

Re: Email architecture

e antispam and antivirus - they're the things that turn out to be the trickiest to wire in. Miles Fidelman On 7/17/18 6:20 AM, Tom Marcoen wrote: Hey all, I was wondering if someone knows about a good tutorial or design document describing how to setup postfix, dovecot (or something else) and o

Re: possiblities to release a mail

On 5/31/18 7:03 AM, Wietse Venema wrote: Maurizio Caloro: Hello Together I ask me if are possible to view on console with postfix command witch mail's are holding back, Status mailtraffic, and so on not mail.log about different reasons - blacklisted, spam, or score - and to release this mail

RE: Trouble sending email to myself on new server i am building

New server, new IP address, same domain name? Could be that you're dealing with DNS transition delays.  Check the TTLs on your domain records! Original message From: "Fazzina, Angelo" Date: 10/2/17 1:24 PM (GMT-07:00) To: njo...@megan.vbhcs.org,

Re: can't get server to start postfix

for some unknown reason. You might do "postfix check" to see if it finds any configuration errors. Then you might do "postfix start -Dv" to run in debugging mode with verbose logging, and see if you can find what's killing master. Miles Fidelman On 9/7/17 2:34 PM, Fazzi

Re: can't get server to start postfix

are named postfix - the top-level process is named "master") - you might have to install the tools, I think they're part of the "process tools" package on Debian (but that's completely from memory) - google is yourf friend Miles Fidelman On 9/7/17 2:14 PM, Fazzina, Angelo

Re: Mailing list manager recommendation?

numbers of lists - where Mailman seems to be the general choice. There's also groupserver, which does a good job of combining lists with web-based forum-style access - and is particularly good if your users are going to be setting up and managing their own lists. Miles Fidelman On 7/14/17 10:41

Re: is there a RFC which suggests that the helo name should be DNS resolvable

On 7/5/17 2:45 PM, Robert Schetterer wrote: Am 05.07.2017 um 19:15 schrieb Viktor Dukhovni: On Wed, Jul 05, 2017 at 06:57:17PM +0200, Stefan Sticht wrote: Is there a RFC or similar which suggests/requires that the helo name should be DNS resolvable? SMTP is defined in RFC 5321 (which

Re: How to implement something close to, but not quite an "announcement-only" mailing list?

lman, but also has more features - so it's a tradeoff. Miles Fidelman -- In theory, there is no difference between theory and practice. In practice, there is. Yogi Berra

Re: Postfix 20 years ago

Wietse, Congratulations on the anniversary (or is that birthday). And thank you for all the hard work! Miles Fidelman On Feb 12, 2017 21:07, "Wietse Venema" <wie...@porcupine.org <mailto:wie...@porcupine.org>> wrote: Last month it was 20 years ago that I starte

Re: how to foward emails to my other mail address？

On 12/10/16 8:31 AM, vod vos wrote: how to foward emails from my server to my other mail address？ for example, some one write mails to m...@example.com ，postfix would forward the mail to m...@google.com ？ my setting is postfix and dovecot.

Re: (Off-topic: who's on the list) was: Is not honoring bounces-to violation of RFC?

On 6/29/16 3:13 PM, Michael J Wise wrote: On 6/29/16 2:30 PM, Michael J Wise wrote: I will read up on it. Thank you for the link. Not everyone, I think, who visits this list is an engineer. In that you are mistaken. Almost everyone who subscribes to this mailing-list is an engineer.

(Off-topic: who's on the list) was: Is not honoring bounces-to violation of RFC?

your official duties, or something that you've fallen into? Miles Fidelman RFC 821 (and its successors) is documentation of the COMMANDS (verbs, if you will) used to move mail, of which one, MAIL FROM, is a way to express where an NDR should go if something goes wrong. Furthermore, at some po

Re: Helpdesk ticket system

years now and would like to implement a ticket system so that incoming mails are attributed a ticket number for the help desk support to be use. Thank you in advance. Request Tracker is an old standby - GPL and in widespread use. (https://www.bestpractical.com) Miles Fidelman -- In theory

Re: Fwd: question re. discarding messages that are rejected during smtp negotiation

On 3/30/16 10:11 AM, Noel Jones wrote: On 3/30/2016 6:24 AM, Miles Fidelman wrote: Hi Folks, I'm busily trying to tune our system to reduce the amount of bounceback we generate. (Wietse - thanks for earlier reply!) Context: Postfix mail system, with sympa mailing list manager. Obviously

Fwd: question re. discarding messages that are rejected during smtp negotiation

the smtp phase (presumably by header checks and/or blocklist checks) - what's the magic configuration change to have these discarded rather than deferred? Thanks, Miles Fidelman

question re. "wiring in" a mailing list handler

rejection threshold for list mail) Thanks very much for any guidance you can offer. Miles Fidelman -- In theory, there is no difference between theory and practice. In practice, there is. Yogi Berra

Re: Goodbye IBM, Hello Google

will continue to support Postfix. Wietse Congrats, and enjoy. Miles Fidelman -- In theory, there is no difference between theory and practice. In practice, there is. Yogi Berra

Re: Tracking down a mail forwarding loop

buried in there - might want to look at whatever is doing list expansion. Miles Fidelman -- In theory, there is no difference between theory and practice. In practice, there is. Yogi Berra

Re: Tracking down a mail forwarding loop

not forwarding mail anywhere. Where else do I look? postmap -q b...@covisp.net /etc/postfix/virtual doesn’t return any results. I'd start with the headers in a message that's looped - that might help track things down. Miles Fidelman

what happens when postfix recovers from a crash? (mostly curiousity)

strategy does postix use for moving a message from ready to process to processing to done? Does the message get: - lost - sent properly - potentially get sent twice? Thanks, Miles Fidelman -- In theory, there is no difference between theory and practice. In practice, there is. Yogi Berra

Re: what happens when postfix recovers from a crash? (mostly curiousity)

Noel Jones wrote: On 8/11/2014 1:01 PM, Miles Fidelman wrote: Hi Folks, This is mostly a matter of curiosity - but not entirely (I'm rethinking the high availability strategy for a small cluster): If a machine crashes while postfix is processing a message - but the disks are not corrupted

DKIM, DMARC, Original-Authentication-Results

an Original-Authentication-Results header, at the MTA level (specifically Postfix)? (And/or, any operational experience that this is a viable way to address the problem.) Thanks very much, Miles Fidelman -- In theory, there is no difference between theory and practice. In practice

Re: High Availability

Wietse Venema wrote: Miles Fidelman: To find solutions, open your favorite search engine and try cyrus mailbox replication, dovecot meailbox replication, and so on. I've been wondering about this too, and it strikes me that mailbox replication is only relevant to local delivery. What about

Re: High Availability

Wietse Venema wrote: Miles Fidelman: Have you considered the following: - Inbound mail spends a fraction of a second in the queue. - Inbound mail spends days or weeks or more in the mailbox. - If an MTA goes down, mail flows via alternate MX hosts. - If the mailbox store goes down, then you

Re: High Availability

.) Thanks, Miles Fidelman -- In theory, there is no difference between theory and practice. In practice, there is. Yogi Berra

Re: Two domains names under the same IP: how to handle this issue ?

is: are there any lessons learned and/or best practices to be applied to the general case of serving multiple domains from the same IP address? Inquiring minds want to know! Miles Fidelman -- In theory, there is no difference between theory and practice. In practice, there is. Yogi Berra

Re: Two domains names under the same IP: how to handle this issue ?

li...@rhsoft.net wrote: Am 05.04.2014 17:01, schrieb Miles Fidelman: It strikes me that I haven't seen a general answer to the original question how to set up PTR records when one is serving more than one domain under the same IP address. don't setup PTR records and A records for a mailsever

Re: Two domains names under the same IP: how to handle this issue ?

/dev/rob0 wrote: On Sat, Apr 05, 2014 at 11:01:54AM -0400, Miles Fidelman wrote: Which leads to several obvious questions: - how does postfix use PTR records (e.g., which header lines are matched, at what points in the processing chain, ...)? A client connects to smtpd. The PTR for the client

Re: Two domains names under the same IP: how to handle this issue ?

I should have added (see in-line) Miles Fidelman wrote: /dev/rob0 wrote: On Sat, Apr 05, 2014 at 11:01:54AM -0400, Miles Fidelman wrote: Which leads to several obvious questions: - how does postfix use PTR records (e.g., which header lines are matched, at what points in the processing chain

Re: No one has responded to either of my posts

). Third - how can you expect not to cheese anyone off, after complaining about how none of us responded to your non-existant posts? Miles Fidelman -- In theory, there is no difference between theory and practice. In practice, there is. Yogi Berra

disabling tls?

A (hopefully) quick question: How does one disable TLS for a single destination? (Yahoo has been exhibiting some funny problems with in-bound mail, and at least one person found that disabling TLS for yahoo servers was a work-around for them.) Thanks very much, Miles Fidelman -- In theory

Re: OT: Large corporate email systems - Exchange vs open source *nix based

when people use them (as folks are using them here). So a move to exchange is (or can be) considerably more than simly changing mail systems. Miles Fidelman

Re: Server hard reset, everything seems ok except local list (mailman) mail

out of curiosity, but also for future reference - would deleting those directories delete queued mail, or is that stored elsewhere? Miles Fidelman -- In theory, there is no difference between theory and practice. In practice, there is. Yogi Berra

Re: question re. sasl authentication - thanks and follow-up (lockouts?)

that repeatedly fail authentication - in the same way that human login can get locked out after n failed authentication attempts? Seems like this might be a good countermeasure for brute force password guessing attacks against smtpd. Thanks, Miles Fidelman -- In theory, there is no difference

Re: question re. sasl authentication - thanks and follow-up (lockouts?)

Robert Schetterer wrote: Am 03.03.2013 13:52, schrieb Miles Fidelman: Folks, Thanks for your replies re. sasl authentication. In thinking about things, and looking at all the attacks on our mailer (repeated attempts to authenticate and send email), it occurs to me: Does the postfix smtpd

question re. sasl authentication

: is there a way to flush the cache? Thanks very much, Miles Fidelman -- In theory, there is no difference between theory and practice. In practice, there is. Yogi Berra

Re: spamd to pipe 4 minute delay?

of the daemon. How are you invoking spamassassin? I've noticed similar behavior in my setup - amavisd+spamassassin+clamav. Every once in a while a message seems to take a long time getting through, and I think it's the virus check that ends up delaying things. Miles Fidelman -- In theory

Re: High Availability Solution for Postfix SMTP Server

. Miles Fidelman -- In theory, there is no difference between theory and practice. In practice, there is. Yogi Berra

software for sending large files?

that I've seen scripts like this in the past, but I've been drawing a blank in trying to track one down today. Thanks for any pointers. Miles Fidelman -- In theory, there is no difference between theory and practice. In practice, there is. Yogi Berra

Re: software for sending large files? - solution found

Benny Pedersen wrote: Den 2012-06-03 01:15, Miles Fidelman skrev: I figure someone here might know [snip] bittorrent, with webseeds and or dht only option, then torrent can be sent over email, and recipient fetch the file from the sender via torrent protocol unlimit size

Re: high-availability configurations?

Jeroen Geilman wrote: On 03/14/2012 04:19 PM, Miles Fidelman wrote: Hi Folks, I'm currently running a pretty basic high-availability configuration for our mail server (postfix) - it simply runs in a Xen virtual machine, with mirrored disks across two machines (DRBD), and failover of the VM

high-availability configurations?

doing? And.. are there any good references, presentations, etc. that anybody knows about re. building high-availability, scalable, distributed mail processing infrastructure? Thank you very much, Miles Fidelman -- In theory, there is no difference between theory and practice. In practice

Re: free antivirus scanner ?

Benny Pedersen wrote: On Tue, 03 Jan 2012 16:26:57 +0100, Frank Bonnet wrote: I'm searching for a friend (who has very few money) an open source antivirus scanner for email server that works with Postfix. ClamAV hooks nicely into postfix with clammilter and smtp via clamsmtp also wires in

Re: Do you people ever rest

Jerry wrote: On Sat, 24 Dec 2011 06:34:37 +0100 (CET) Andreas Berton articulated: Merry christmas to you all! Have you ever considered the irony in the fact that we celebrate Christ's birthday every year by ignoring the fact that he would have celebrated Hanukkah? Let's make that Merry

Re: Do you people ever rest

Mauricio Tavares wrote: I would be more concerned about the TOW missile Santa Claus has... he does outweapon the Kwanzabot. Ho, ho, ho! It's time to get jolly on your naughty asses! -- In theory, there is no difference between theory and practice. In practice, there is. Yogi

Re: How to enumerate the bounce queue?

peng...@sepserver.net wrote: Is there some way to enumerate the bounce queue and flush it? pfqueue is a good tool for this -- In theory, there is no difference between theory and practice. Infnord practice, there is. Yogi Berra

high-availability mail cluster?

much, Miles Fidelman -- In theory, there is no difference between theory and practice. Infnord practice, there is. Yogi Berra

Re: Why does 'help' not work at smtp prompt?

Scott Kitterman wrote: On Thursday, October 06, 2011 12:06:41 AM Miles Fidelman wrote: Viktor Dukhovni wrote: The Postfix SMTP server does not implement the legacy Sendmail SMTP help interface, this feature is obsolete. Last time I looked (just now), RFC5321 stated: SMTP servers SHOULD

Re: Why does 'help' not work at smtp prompt?

to apply. Is this reply nitpicky, and/or pedantic? Probably. Miles Fidelman -- In theory, there is no difference between theory and practice. Infnord practice, there is. Yogi Berra

Re: mailing lists software ?

behind, never quite worked right, and were harder to wire together since they tend to put stuff in different places than the standard distribution). Miles Fidelman -- In theory, there is no difference between theory and practice. Infnord practice, there is. Yogi Berra

Re: Webmin as an admin tool?

Robert Schetterer wrote: Am 26.08.2011 19:56, schrieb Reindl Harald: Am 26.08.2011 19:28, schrieb John: I do not want to start a flam war, but what are the thoughts on using webmin as a tool to administer postfix (+dovecot, but that is outside this group) missing knowledges, inwilling to

Re: postfix with archiving and e-discovery

Jeroen Geilman wrote: On 2011-08-10 16:39, Donny Brooks wrote: Hello all, I have done some research on this but cannot find an easy to implement solution that doesn't need us to send our mail to an outside company. We need an in-house email archiving and e-discovery solution that would

Re: Looking for a maillist manager

running, it's pretty powerful. For what it's worth, at least for the Debian version, I've always found it easier to install from the tarball, rather than the packaged version. Miles Fidelman -- In theory, there is no difference between theory and practice. Infnord practice

Re: Where do my rejected email go

/wiki/Dead_letter_office Now, having said that, I'm not sure what they do with dead spam. Miles Fidelman -- In theory, there is no difference between theory and practice. Infnord practice, there is. Yogi Berra

Re: Directing SPAM mail to a Junk Folder

Chaminda Indrajith wrote: Dear All, I need to put the SPAM mails into users' Junk Mail folder. How can we do it in Postfix? Mails are stored in Maildir format in the user's home directory. Junk mail folder is inside the Maildir as .Junk. Amavisd-new tags the spam mails as [SPAM] 1.

Re: alternatative to Mailman

Martin Schütte wrote: Mauro Faccenda wrote: Does anyone can recommend any good alternative to Mailman as a Mailing Lists Manager that plugs well with Postfix? I heard some praise for http://www.sympa.org/ But I never used it myself. a tremendous piece of work - truly industrial

Re: How to limit attachment size in postfix

through a virus and/or spam filter you might be able to apply limits there. I'm pretty sure that there's a way to fiddle with the config variables in the amavisd/spamassassin combo to limit attachment size. Miles Fidelman -- In theory, there is no difference between theory and practice

Re: Linux users with mixed case names

interoperability and is discouraged. I'm actually a bit surprised to discover this. Postfix is generally pretty good about spec. compliance. Miles Fidelman -- In theory, there is no difference between theory and practice. In practice, there is. Yogi Berra

Re: Backscatter being generated from mail aliased to other servers.

Wietse Venema wrote: Recipient verification does not expand a local alias (imagine what would have to be done to verify with addresses in .forward files, or in a mail distribution list). Maybe I'm dense, but what would be the problem with verifying addresses in .forward files? For list

Re: Blacklisted on Verizon

d.h...@yournetplus.com wrote: Quoting Chris Arnold carn...@electrichendrix.com: OK, I have gotten access to the mail server and have downloaded pflogsumm.pl. I have followed the readme and chown and chmod. Did not copy the man page. The man page does state if no file(s) are specified, it

Re: nobody is going to write a new MTA

John Peach wrote: On Thu, 28 May 2009 11:56:38 +0200 Ralf Hildebrandt ralf.hildebra...@charite.de wrote: Turns out Wietse was wrong: http://lwn.net/SubscriberLink/334866/fffe7b1a0716c0e4/ All political; no real rational reasoning for it I'm not sure I would characterize a

virtual alias problem

...@fidelman.net is properly handled - under other circumstances it's not recognized any ideas what might be wrong, or tests to run to narrow things down? Thanks very much, Miles Fidelman -- In theory, there is no difference between theory and practice. In practice, there is. Yogi Berra

Re: virtual alias problem

missing piece of information (inserted below) Miles Fidelman wrote: Hi Folks, I've been rebuilding a server that was working fine, but then crashed. In the process I've installed a newer (current) version of Postfix, and suddenly I'm seeing an aliasing problem that I've never seen before

Re: virtual alias problem

Wietse Venema wrote: Why don't you simply restore the Postfix configuration from backups, and execute postfix upgrade-configuration to upgrade to the newer Postfix? A great deal of effort is put into keeping features compatible, so that people like you don't have to play detective after an

Re: virtual alias problem

, Miles Miles Fidelman wrote: missing piece of information (inserted below) Miles Fidelman wrote: Hi Folks, I've been rebuilding a server that was working fine, but then crashed. In the process I've installed a newer (current) version of Postfix, and suddenly I'm seeing an aliasing problem

file mailing utility?

for email), I've started to look for a utility I can install that will provide this same functionality. Anybody out there running such a beast? Suggestions? Thanks Much, Miles Fidelman -- In theory, there is no difference between theory and practice. In practice, there is. Yogi Berra

Re: file mailing utility?

Issac Kelly wrote: Check out dropbox at getdropbox.com it's recently out of private beta, and I've been using it without incident for about a year. Interesting service, but I'm really looking for something to run on MY server, not someone else's service - there are plenty of those. Miles