Re: Postfix lost connection after EHLO from neon.domain.com

One more thing... On 9 Feb 2018, at 9:09, Motty Cruz wrote: Isn't because my smtp server does not support TLS?  Yes, it could be. Their broken firewall may be set to require TLS support. Which is not in itself a bad thing. The only thing broken about this IF it's because they require TLS

Re: Postfix lost connection after EHLO from neon.domain.com

Dr. Wietse, Thank you very much for taking the time to reply to my email. I enabled TLS on Postfix with a certificate from letsencrypt.com for temporary solution. This solved the problem, we're now able to received emails  from that specific client. Your support on this matter is

Re: Postfix lost connection after EHLO from neon.domain.com

On 09-02-18 18:35, Motty Cruz wrote: If you have any other ideas please share, I appreciate your help! You could try getting a packet trace on your end. It might show you in more detail what is going on. Worst case you learn nothing new. regards, Erik

Re: Postfix lost connection after EHLO from neon.domain.com

Bastian Blank: > On Thu, Feb 08, 2018 at 09:43:51PM -0800, motty cruz wrote: > > I am trying to figure out why my Postfix disconnect after EHLO command. A > > customer is trying to email me something but Postfix disconnect: ( on the > > customer side this is the bounced message "Remote Server

Re: Postfix lost connection after EHLO from neon.domain.com

Thanks Bill, The customer is from fairly large company and they're able to send email to other clients. They will not cooperate to help me troubleshoot this issue. I am working from the assumption the problem is on my side. We were getting emails from that client up to few weeks ago. Nothing

Re: Postfix lost connection after EHLO from neon.domain.com

On 9 Feb 2018, at 9:09, Motty Cruz wrote: Hello Bastian, you're right " ( on the customer side this is the bounced message "Remote Server returned '< spring1.mydomain.com #5.0.0 smtp; 554 Security violation. Email Session ID:" ) This is a message generated by a dysfunctional and misguided

t/s missing inbound mails with limited info

I've noticed I'm missing certain inbound emails addressed to me, the IT support of sender is of limited help, as when I've asked for any rejection notice or IP of sending server I was told "Please be informed that we couldn't see failure/rejection notice from our end as we have received the

Re: Designing a proper postfix/dovecot LMTP/LDAP layout

Hi Viktor, thanks for Your advices. I now have "almost working" configuration, but still some problems with mail groups - because of what you warned me about. In more details below: On Wed, 7 Feb 2018 12:27:25 -0500 Viktor Dukhovni wrote: > > On Feb 6, 2018, at 9:05

Re: Postfix lost connection after EHLO from neon.domain.com

On 2018-02-08 (22:43 MST), motty cruz wrote: > > match_hostname: smtpd_client_event_limit_exceptions: neon.domain.com ~? > 189.45.22.55 postconf -n What (and why) do you have smtpd_client_event_limit_exceptions set to? Also, I don't believe for a second that domain.com

Re: t/s missing inbound mails with limited info

On 10 February 2018 at 05:22, Voytek wrote: > I've noticed I'm missing certain inbound emails addressed to me, the IT > support of sender is of limited help, as when I've asked for any rejection > notice or IP of sending server I was told "Please be informed that we > couldn't

Re: Postfix lost connection after EHLO from neon.domain.com

Hello Bastian, you're right " ( on the customer side this is the bounced message "Remote Server returned '< spring1.mydomain.com #5.0.0 smtp; 554 Security violation. Email Session ID:" ) is on the response of the remote server (smtp server of person submitting the email) but this log below is