Re: Outlook.com Max Connections

2020-10-13 Thread Tom Sommer
On 2020-09-01 00:28, @lbutlr wrote: On 31 Aug 2020, at 10:08, Greg Sims wrote: (1) continue to ignore the MaxConnection Messages/Deferrals (2) reduce the number of processes per transport to 1 (3) reduce the number of outlook transports to 2 4) add a footer to mails going to outlook a

Re: Outlook.com Max Connections

2020-10-13 Thread Tom Sommer
On 2020-08-22 22:35, Wietse Venema wrote: Wietse Venema: Greg Sims: > sender_dependent_default_transport_maps = randmap:{r235,r236,r237,r238} > > selects transports at random for delivering email. Is it possible to > schedule a set of transports using a round-robin discipline? This man 5 tc

Mail server without MX record.

2020-10-13 Thread Jason Long
Hello, Can I use Postfix without MX record? I installed Postfix and Dovecot via "https://wiki.centos.org/HowTos/postfix"; tutorial and I want to know can I use it without MX record? Thank you.

Re: PostFix not working after update

2020-10-13 Thread Paul Lauzon
Thanks for the help. I have kept Postfix and many other services disabled at power-up since last year and it works well for me that way. I did that last year after I got DDOS and spammed tons of mail with virus attachments and my server was so overwhelmed that I could not use it for days and even

Re: Mail server without MX record.

2020-10-13 Thread A. Schulze
Am 13.10.20 um 14:09 schrieb Jason Long: > I want to know can I use it without MX record? A records are used by default if no MX is available That's nothing postfix specific - it's an RFC requirement for any MTA Andreas

Re: Mail server without MX record.

2020-10-13 Thread Richard
> Date: Tuesday, October 13, 2020 12:09:28 + > From: Jason Long > > Hello, > Can I use Postfix without MX record? I installed Postfix > and Dovecot via "https://wiki.centos.org/HowTos/postfix"; tutorial > and I want to know can I use it without MX record? Yes. Some mail sites, incorrectly,

Re: Mail server without MX record.

2020-10-13 Thread Wietse Venema
Jason Long: > Hello, > Can I use Postfix without MX record? I installed Postfix and?Dovecot > via "https://wiki.centos.org/HowTos/postfix"; tutorial and I want > to know can I use it without MX record? The SMTP standard (RFC 2821) does not *require* MX records. Some uninformed mail operators may r

Re: Mail server without MX record.

2020-10-13 Thread Bill Cole
On 13 Oct 2020, at 8:09, Jason Long wrote: Hello, Can I use Postfix without MX record? I installed Postfix and Dovecot via "https://wiki.centos.org/HowTos/postfix"; tutorial and I want to know can I use it without MX record? That is entirely dependent on what you intend to use Postfix for.

Re: Mail server without MX record.

2020-10-13 Thread Jason Long
Thank you for all of your messages. With that tutorial, which record or port is needed?  On Tuesday, October 13, 2020, 04:31:34 PM GMT+3:30, Wietse Venema wrote: Jason Long: > Hello, > Can I use Postfix without MX record? I installed Postfix and?Dovecot > via "https://wiki.centos.org

Re: Mail server without MX record.

2020-10-13 Thread IL Ka
What are you trying to achieve? There are alot of scenarios where Postfix may be used: * "Send only" email server for your website (to give your website ability to send emails). You never receive any emails from the outside. * Forward only: it just accepts mails from your apps, and sends them via

Re: Mail server without MX record.

2020-10-13 Thread Jason Long
I have an Internet domain name and a Linux server and I want to have an email server for send and receive emails. For example, if my domain is "example.net" then I want to have a "i...@example.net" address for send and receive emails from the Internet. On Tuesday, October 13, 2020, 06:09

Re: Mail server without MX record.

2020-10-13 Thread Bernardo Reino
On Tue, 13 Oct 2020, Jason Long wrote: I have an Internet domain name and a Linux server and I want to have an email server for send and receive emails. For example, if my domain is "example.net" then I want to have a "i...@example.net" address for send and receive emails from the Internet.

Re: Mail server without MX record.

2020-10-13 Thread @lbutlr
On 13 Oct 2020, at 09:45, Bernardo Reino wrote: > On Tue, 13 Oct 2020, Jason Long wrote: > >> I have an Internet domain name and a Linux server and I want to have an >> email server for send and receive emails. For example, if my domain is >> "example.net" then I want to have a "i...@example.ne

Re: Mail server without MX record.

2020-10-13 Thread Jason Long
I can't have MX record because the DNS server have another MX record for other mail server. I'm thankful if anyone tell me how can I solve my problem without MX record. Is t possible with A record? On Tuesday, October 13, 2020, 07:19:56 PM GMT+3:30, @lbutlr wrote: On 13 Oct 2020, at

Re: Mail server without MX record.

2020-10-13 Thread IL Ka
> DNS server have another MX record for other mail server. Then all mail to your domain will go to that mail server. No way to change it. This is how SMTP works: If one or more MX RRs are found for a given name, SMTP systems MUST NOT utilize any A RRs https://tools.ietf.org/html/rfc2821#section

Re: Mail server without MX record.

2020-10-13 Thread Richard
> Date: Tuesday, October 13, 2020 15:52:41 + > From: Jason Long > > I can't have MX record because the DNS server have another MX > record for other mail server. I'm thankful if anyone tell me how > can I solve my problem without MX record. Is t possible with A > record? Either you misstat

OpenDMARC milter domain based

2020-10-13 Thread Egoitz Aurrekoetxea
Good afternoon, Can a Postfix instance have a destination based milter (for being able to bypass DMARC check for some customers that ask for it) and finally for everybody a filter action calling Amavis?. I mean can a content filter be called from a restriction class (with filter for instance)?. B

Re: Mail server without MX record.

2020-10-13 Thread Chris Green
On Tue, Oct 13, 2020 at 04:42:31PM +, Richard wrote: > > > > Date: Tuesday, October 13, 2020 15:52:41 + > > From: Jason Long > > > > I can't have MX record because the DNS server have another MX > > record for other mail server. I'm thankful if anyone tell me how > > can I solve my probl

Re: Mail server without MX record.

2020-10-13 Thread Fred Morris
Notwithstanding, any "fully qualified domain name" (FQDN) can have email sent to it; typically only the FQDN immediately below the zone cut, and also the subject of SOA and NS records, has MX records. But any other FQDN in the zone which has an A record should be deliverable, if it's routable

Re: OpenDMARC milter domain based

2020-10-13 Thread Wietse Venema
Egoitz Aurrekoetxea: > Good afternoon, > > Can a Postfix instance have a destination based milter (for being able to > bypass DMARC check for some customers that ask for it) and finally for > everybody a filter action calling Amavis?. SMTP does not receive any destination until after the fourth s

Re: Mail server without MX record.

2020-10-13 Thread @lbutlr
On 13 Oct 2020, at 12:03, Fred Morris wrote: > Notwithstanding, any "fully qualified domain name" (FQDN) can have email sent > to it; typically only the FQDN immediately below the zone cut, and also the > subject of SOA and NS records, has MX records. Pretty sure it is prefect fine to have diff

Re: Mail server without MX record.

2020-10-13 Thread Fred Morris
Hello. Real example of someone with this setup, and all records for the FQDNs in question, or it didn't happen. On Tue, 13 Oct 2020, @lbutlr wrote: On 13 Oct 2020, at 12:03, Fred Morris wrote: Notwithstanding, any "fully qualified domain name" (FQDN) can have email sent to it; typically only

Re: Mail server without MX record.

2020-10-13 Thread Jason Long
I'm really thankful for all information and help.Excuse me, I have some questions and I'm thankful if anyone answer to them by number:1- Each domain can have a MX record?2- If a company need multi MX record then it must have multi DNS server too?3- Other methods like forwarding need MX record to

Re: Mail server without MX record.

2020-10-13 Thread IL Ka
>1- Each domain can have a MX record? If you want to receive email for this domain then yes, you should have an MX record for it. Without it "A" record will be used, but it is better to have MX. >2- If a company need multi MX record then it must have multi DNS server too? You can have multiple M

Re: Mail server without MX record.

2020-10-13 Thread Ron Wheeler
You want an MX record. Why would you not want an MX record? What is the downside? Where is your dns? On 2020-10-13 11:04 a.m., Jason Long wrote: I have an Internet domain name and a Linux server and I want to have an email server for send and receive emails. For example, if my domain is "exa

Re: PostFix not working after update

2020-10-13 Thread Bob Proulx
Paul Lauzon wrote: > I have kept Postfix and many other services disabled at power-up since last > year and it works well for me that way. I did that last year after I got > DDOS and spammed tons of mail with virus attachments and my server was so > overwhelmed that I could not use it for days and

Re: Mail server without MX record.

2020-10-13 Thread Bill Cole
On 13 Oct 2020, at 15:02, Fred Morris wrote: Hello. Real example of someone with this setup, and all records for the FQDNs in question, or it didn't happen. Waving at Fred... billmail.scconsult.com. 10800 IN MX 0 clues.scconsult.com. billmail.scconsult.com. 10800 IN MX

Re: Mail server without MX record.

2020-10-13 Thread Fred Morris
On Tue, 13 Oct 2020, Bill Cole wrote: On 13 Oct 2020, at 15:02, Fred Morris wrote: Hello. Real example of someone with this setup, and all records for the FQDNs in question, or it didn't happen. Waving at Fred... billmail.scconsult.com. 10800 IN MX 0 clues.scconsult.com. billma

possible bottlenecks

2020-10-13 Thread 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. There are no known peak periods of the day but that's also sure that the load will be uneven (no emails

Re: Outlook.com Max Connections

2020-10-13 Thread Viktor Dukhovni
> On Oct 13, 2020, at 7:33 AM, Tom Sommer wrote: > > The process limit would be an overall limit on the transport? > > Is there a way to limit the number of concurrent connections for each > destination IP? No. Postfix has no mechanism for that. The only entity with a global view of the queu

Re: Mail server without MX record.

2020-10-13 Thread Dirk Stöcker
On Tue, 13 Oct 2020, Fred Morris wrote: Perfect, thanks! billmail.scconsult.com is not delegated from scconsult.com (has no SOA or NS), and sccconsult.com is delegated from .com (of course), with SOA and NS. Bonus points: billmail has SPF. Same concept, but a bit different (also has SPF, DA