Re: Mail server without MX record.

Thank you. Can you tell me how can I setup my Postfix server with A record Or how can I change the DNS server two support two MX records? On Tuesday, October 13, 2020, 11:09:22 PM GMT+3:30, IL Ka wrote: >1- Each domain can have a MX record? If you want to receive email for this domai

Re: Mail server without MX record.

On Wed, Oct 14, 2020 at 07:04:25AM +, Jason Long wrote: > Can you tell me how can I setup my Postfix server with A record Or how > can I change the DNS server two support two MX records? The gap between what your questions suggest you know, and what you need to know to operate a mailserver is

Re: possible bottlenecks

On Wed, Oct 14, 2020 at 06:47:19AM +0200, Zsombor B wrote: > I know this is a complicated question but what/where do you see > possible bottlenecks in postfix? > Is it CPU? RAM? Disk IO? Whatever you have least of, relative to the workload you're expecting to process :-) Generally speaking you

OpenDKIM but no log of postfix milter running or trying to run

I've set up OpenDKIM.  I've noted the config below, but the basic issue is that my mails aren't being DKIM signed and my logs, while showing no mail-related errors, also don't show any evidence of milters running or trying to run.  So I'm suspecting postfix config error rather than opendkim.  So fa

Re: OpenDKIM but no log of postfix milter running or trying to run

Set "milter_default_action" to "reject", reload postfix, and try to send mail. You should probably get some errors in maillog. Check your syslog config, to make sure opendkim logs are also written. Check your dkim is running (telnet 127.0.0.1 8891). Btw, I have not set "milter_mail_macros" explic

Re: PostFix not working after update

Thanks a lot for taking the time to thoroughly answer my questions! My problem is that I only see warnings in the log file, no errors. Even after forcing a value for chroot (tried both 'y' and 'n', see below), it still complains about compatibility. But from the list of compatibility issues, tha

Re: PostFix not working after update

Dnia 14.10.2020 o godz. 08:36:49 Paul Lauzon pisze: > Oct 9 05:35:04 ...: warning: > /var/spool/postfix/etc/ssl/certs/ca-certificates.crt and > /etc/ssl/certs/ca-certificates.crt differ > Oct 9 05:35:05 ...: warning: > /var/spool/postfix/lib/i386-linux-gnu/libnss_systemd.so.2 and

Re: OpenDKIM but no log of postfix milter running or trying to run

Thanks.  The suggestion to set milter_default_action to reject is good.  (I also tried unsetting milter_mail_macros.)  Strangely, it doesn't cause a rejection: Oct 14 15:42:53 nantes-1 postfix/smtps/smtpd[5954]: connect from w.z.y.x.rev.sfr.net[x.y.z.w] Oct 14 15:42:53 nantes-1 postfix

Re: Mail server without MX record.

It is so odd that some people here don't like to answer to the users questions and forwarding them to read a book with 496 pages. On Wednesday, October 14, 2020, 10:42:08 AM GMT+3:30, Viktor Dukhovni wrote: On Wed, Oct 14, 2020 at 07:04:25AM +, Jason Long wrote: > Can you tell

Re: possible bottlenecks

Zsombor B: > Hi, > > > I know this is a complicated question but what/where do you see > possible bottlenecks in postfix? > Is it CPU? RAM? Disk IO? > > I'm building an infra to send out ~3-5 million emails a day. That might have been challenging 25 years ago. As Viktor notes, the real chall

Re: Mail server without MX record.

Jason Long: > It is so odd that some people here don't like to answer to the > users questions and forwarding them to read a book with 496 pages. Indeed, postfix-users is not a cargo-cult recipe factory. Teach a man to fish, and they can feed themselves. Wietse

Re: OpenDKIM but no log of postfix milter running or trying to run

> The config file is active, however. You can check your milter config with $ postconf smtpd_milters non_smtpd_milters milter_default_action or even $ postconf | grep milter You can probably post output it here. Also, try to increase logging: http://www.postfix.org/DEBUG_README.html

Re: OpenDKIM but no log of postfix milter running or trying to run

Jeff Abrahamson: > I've set up OpenDKIM.? I've noted the config below, but the basic issue > is that my mails aren't being DKIM signed and my logs, while showing no > mail-related errors, also don't show any evidence of milters running or > trying to run.? So I'm suspecting postfix config error rat

Re: OpenDKIM but no log of postfix milter running or trying to run

On 14/10/2020 16:06, Wietse Venema wrote: > Jeff Abrahamson: >> I've set up OpenDKIM.? I've noted the config below, but the basic issue >> is that my mails aren't being DKIM signed and my logs, while showing no >> mail-related errors, also don't show any evidence of milters running or >> trying to

Re: Mail server without MX record.

But it helps to know what bait is before you buy a fishing boat. ~v On 2020/10/14 10:00 AM, Wietse Venema wrote: Jason Long: It is so odd that some people here don't like to answer to the users questions and forwarding them to read a book with 496 pages. Indeed, postfix-users is not a cargo-c

Re: OpenDKIM but no log of postfix milter running or trying to run

On 14/10/2020 16:02, IL Ka wrote: > > The config file is active, however.  > > You can check your milter config with > > $  postconf smtpd_milters non_smtpd_milters milter_default_action > > or even > > $ postconf  | grep milter > > You can probably post output it here. > Also, try to increase logg

Re: OpenDKIM but no log of postfix milter running or trying to run

Shutdown OpenDKIM, set "milter_default_action = tempfail", reload postfix and try to send something. If your mail is rejected, then Postfix configuration is ok, and you need to grep maillog (or other logs) for DKIM On Wed, Oct 14, 2020 at 5:28 PM Jeff Abrahamson wrote: > On 14/10/2020 16:02, IL

Re: OpenDMARC milter domain based

Hi Wietse, Thank you so much for the advise... I'm planning how to implement all this :) Best regards, El mar., 13 oct. 2020 a las 20:20, Wietse Venema () escribió: > Egoitz Aurrekoetxea: > > Good afternoon, > > > > Can a Postfix instance have a destination based milter (for being able to > >

Re: Mail server without MX record.

Jason Long wrote: Thank you. Can you tell me how can I setup my Postfix server with A record You just add an A record with a suitable name for your server. There's nothing Postfix-specific about this. Or how can I change the DNS server two support two MX records? I'm not aware of any DNS

Re: OpenDKIM but no log of postfix milter running or trying to run

Oh, that's awesome, thanks.  So for the first time I got a log message concerning the milter.  And so this is, indeed, an OpenDKIM issue. Many thanks, I'll go look over there for my problems. Jeff Abrahamson http://p27.eu/jeff/ http://transport-nantes.com/ On 14/10/2020 16:43, IL Ka wrote: >

Re: Mail server without MX record.

Have you tried Google? You can likely find whole tutorials answering both your questions. Ron On 2020-10-14 3:04 a.m., Jason Long wrote: Thank you. Can you tell me how can I setup my Postfix server with A record Or how can I change the DNS server two support two MX records? On Tuesday, O

Re: Mail server without MX record.

Thank you Kris. Thus with "https://wiki.centos.org/HowTos/postfix"; tutorial I'm on a right track and Postfix doen't have any specific options about the selecting record? The Postfix server configured properly and the record option is not related to it? On Wednesday, October 14, 2020, 06:

Re: Mail server without MX record.

Jason Long: > Thank you Kris. > Thus with "https://wiki.centos.org/HowTos/postfix"; tutorial I'm > on a right track and Postfix doen't have any specific options about > the selecting record? The Postfix server configured properly and > the record option is not related to it? Here's some email basi

Re: Mail server without MX record.

Dnia 14.10.2020 o godz. 17:03:05 Jason Long pisze: > Thus with "https://wiki.centos.org/HowTos/postfix"; tutorial I'm on a right > track and Postfix doen't have any specific options about the selecting > record? The Postfix server configured properly and the record option is > not related to it? M

Re: Mail server without MX record.

Dnia 14.10.2020 o godz. 13:38:12 Wietse Venema pisze: > Here's some email basics. > > 1) You arrange for an MX and/or A record in your DNS zone. You edit > the zone file yourself, or you use some provider's application to > edit their zone file. > > exammple.com10 IN MX mail.exampl

Re: Mail server without MX record.

Jaroslaw Rafa: > Dnia 14.10.2020 o godz. 13:38:12 Wietse Venema pisze: > > Here's some email basics. > > > > 1) You arrange for an MX and/or A record in your DNS zone. You edit > > the zone file yourself, or you use some provider's application to > > edit their zone file. > > > > example.com

virtual_alias_maps doesn't require domains to be in virtual_alias_domains

With postfix 3.3.1 it appears that mappings in virtual_alias_maps are honored without the domains being listed in virtual_alias_domains. Just want to confirm that this is correct and intended behavior going forward. Thanks in advance... -- Fred Morris

LMTP said: 550-Mailbox unknown or you do not have authorization to see it

I am building a new mail server to replace an older EL6 server. The new server is Centos 8. I keep getting this response when trying to deliver email to a local account stored in LDAP. host mail.example.org[/var/lib/imap/socket/lmtp] said: 550-Mailbox unknown. Either there is no mailbox associate

Re: virtual_alias_maps doesn't require domains to be in virtual_alias_domains

Fred Morris: > With postfix 3.3.1 it appears that mappings in virtual_alias_maps are > honored without the domains being listed in virtual_alias_domains. Just > want to confirm that this is correct and intended behavior going forward. The first sendence in the manpage says: The optional

Re: LMTP said: 550-Mailbox unknown or you do not have authorization to see it

Ezsra McDonald: > I am building a new mail server to replace an older EL6 server. The new > server is Centos 8. I keep getting this response when trying to deliver > email to a local account stored in LDAP. > > host mail.example.org[/var/lib/imap/socket/lmtp] said: > 550-Mailbox unknown. Either t

Sub-addressing ("plus-addressing") questions...

Hi! We have been asked to allow the plus sign in emails addresses. On Postfix's side I added "recipient_delimiter = +" and everything seems to work perfectly. The way I understood it only the server which receives the emails and does the actual delivery to the "mailbox" has to know how to de

Re: Sub-addressing ("plus-addressing") questions...

On 10/14/20 3:20 PM, Nick wrote: > I also have to tell the developers of our applications what should be > allowed... Good luck with that one. I have encountered INNUMERABLE werb sites which fervently insist that '+' is not a legal character in an email address. > Is it possible to have more th

Re: Mail server without MX record.

There were a lot of answers given but the questions showed that the person asking the questions did not have the background in DNS and SMTP to take advantage of the answers and needed to take a bit of time with books or Google to develop enough understanding to know what to ask and how to inter

Re: Sub-addressing ("plus-addressing") questions...

On 15/10/20 8:20 am, Nick wrote: Is it possible to have more than one "+" sign in the email address, what does Postfix do when it sees that, does it stop at the first one and considers everything that follow a sub-addres? Yes. Postfix uses the strcspn() C function to do the split which expli

Re: Sub-addressing ("plus-addressing") questions...

On Thu, Oct 15, 2020 at 01:09:33PM +1300, Peter wrote: > On 15/10/20 8:20 am, Nick wrote: > > Is it possible to have more than one "+" sign in the email address, what > > does Postfix do when it sees that, does it stop at the first one and > > considers everything that follow a sub-addres? > >

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