SMTP SNI Support

2018-01-25 Thread MK
There were some discussions in 2015 and more recently about SNI support. For IMAP/POP, dovecot (which allows SNI support) has a configuration like this in our setup: local_name imap.example.org {  ssl_cert = http://postfix.1071664.n5.nabble.com/postfix-and-multiple-TLS-certificates-td80968.html  

Re: SMTP SNI Support

2018-01-25 Thread MK
Amazing!  Thanks! I’d request considering allowing the SNI to be enabled per port. While using it in production we found a very small number (<1%) of mail servers sending to our server didn’t like SNI- likely ancient mail servers.  That said, we didn’t find any clients (outlook, phones, etc) tha

Re: SMTP SNI Support

2018-01-25 Thread MK
nuary 25, 2018, 9:43 PM, Viktor Dukhovni wrote: > On Jan 25, 2018, at 9:30 PM, MK wrote: > > I’d request considering allowing the SNI to be enabled per port. Each port gets its own entry in master.cf, so you will certainly be able to enable or disable SNI support for a given TCP endp

Re: Postfix using all CPU after nightly mail submission

2018-02-21 Thread MK
Was seeing similar behaviour under high tcp load in other applications (unrelated to postfix). It’s possible you’re running into this bug. Try to Set vmxnet3.rev.30=FALSE under the VMs properties and reboot More info here:191201 – Randomly freezes due to VMXNET3  | | | 191201 – Randomly

Re: SMTP SNI Support

2018-02-22 Thread MK
Hi Viktor, Is this on the roadmap for 3.4 or for a long-term roadmap?Just curious.Thanks for all the amazing work on Postfix. -M From: Viktor Dukhovni To: Postfix users Sent: Thursday, January 25, 2018 10:23 PM Subject: Re: SMTP SNI Support > On Jan 25, 2018, at 10:06 PM,

Re: How to use the new server TLS SNI feature (3.4.x)

2019-04-13 Thread MK
The documentation on this is very convoluted, but through trial and error and reviewing code, I did figure it out. - main.cf -# provide the primary certificate for the server, to be used for outgoing connectionssmtpd_tls_chain_files =  /etc/letsencrypt/live/servername.serverdom.com/privk

Selective use of alias by way of a header filter (help appreciated)

2019-04-16 Thread MK
My current setup is this:  * Mail is received by postscreen (which filters RBLs and basic checks)  * Passed to smtpd  * applies content_filter which passes the mail to amavis-new port 10024  * Amavis-new passes the mail back on 10025  * LOCAL mail is sent to the virtual_transport (dovecot LMTP)