Postfix SSL: Incoming email for multiples domains

[fkardame]

SYSTEM INFORMATION
OS type and version	CentOS Linux 7.9.2009
Webmin version	2.105
Virtualmin version	7.9.0
Related packages	All updated to latest pkgs

Hello Team,

I have read multiple post about postfix to copy ssl for domain, but in my version I do not have any such function where I can copy ssl for the domains email postfix. The only options I have is Set as Default Services Certificate

I have virtual servers namely domainA(dot)com, domainB(dot)com and DomainC(dot)com, here when I set SSL of DomainB.com as default for Postfix then domainA and DomainC face problem in incoming email. In logs it cannot authenticate the certificate which is true.

How can I set certificates per domain for postfix ? Please suggest…

Regards,

[fkardame]

I found steps to follow to resolve this issue on old setup, I tried it and still it did not make any changes.

How can I get the Copy to Postfix function?

How to get installed Postfix 3.4+ with SNI support on CentOS 7/8

I cannot agree more! It might cause issues, which would need some experience to fix it. We would like to point out, that we wouldn’t be able to support it. However, if you feel you want to try, go ahead and let us know how did it go. I would backed up /etc/postfix, /etc/webmin and actually complete /etc directory first. Remember, that you could always go back to stock Postfix by swapping the packages back by using yum/dnf command. Note: Only upcoming Virtualmin 6.10+ release will have SNI sup…

Thanks.

[Ilia]

I think the problem is in cached Postfix version by Webmin. It could be fixed by clicking force-refresh system information button in the dashboard, e.g.:

[fkardame]

Hi Ilia,

Thank you for the quick response.

I tried this and still I am not able to see Copy Certificate to Postfix Button In Setup SSL Certificate

Though All 3 domains have working incoming emails at the moment but only 1 SSL Certificate is set as default.

Thanks.

[Ilia]

What is the actual Postfix version currently installed on your CentOS 7 server?

[fkardame]

postconf -d mail_version
mail_version = 3.8.4

[Ilia]

It looks that you manually upgraded Postfix to the latest version on your CentOS 7 system, right?

If so, can you show the screenshot of the Servers ⇾ Postfix Mail Server page? I wonder how Webmin sees your Postfix version.

[Ilia]

Anyway, deleting Webmin cached Postfix version file, i.e. /etc/webmin/postfix/version manually should solve your initial problem!

We will delete this file automatically, as part of force-system information refresh in the dashboard.

[fkardame]

Awesome.

I see now.

Thanks a lot.