Unable to connect Store/F...
Unable to connect Store/Forward through TLS/SSL
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Topic: Unable to connect Store/Forward through TLS/SSL
Hi,I'm trying to use the Store/Forward Service for my domain and things are working well when I use the basic SMTP Service. However, when I try to get the service to push the email to my mail server using TLS/SSL, it won't get the mails through.I use a certificate from Let's Encrypt on the Synology NAS. And using Synology Mail Server as the backend.In my logs, I can see the following:2024-05-27T17:50:34+02:00 blackhole postfix/smtpd[4417]: connect from mx2.dynu.com[107.161.27.201]2024-05-27T17:50:34+02:00 blackhole postfix/smtpd[4417]: SSL_accept error from mx2.dynu.com[107.161.27.201]: -12024-05-27T17:50:34+02:00 blackhole postfix/smtpd[4417]: warning: TLS library problem: error:14209102:SSL routines:tls_early_post_process_client_hello:unsupported protocol:ssl/statem/statem_srvr.c:1685:2024-05-27T17:50:34+02:00 blackhole postfix/smtpd[4417]: lost connection after CONNECT from mx2.dynu.com[107.161.27.201]2024-05-27T17:50:34+02:00 blackhole postfix/smtpd[4417]: disconnect from mx2.dynu.com[107.161.27.201] commands=0/0I would be very grateful if anyone could help me resolve this.
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Try reducing the TLS / SSL Profile Level to intermediate if it is set at Modern (Control Panel, Security, Advanced tab).
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bcrooker wrote:Try reducing the TLS / SSL Profile Level to intermediate if it is set at Modern (Control Panel, Security, Advanced tab).
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On your Dynu Email service mangement screen, try different options in the "Connection Security" drop down list.
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Author | Topic: Unable to connect Store/Forward through TLS/SSL |
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JCvanDoorn Joined: 5/20/2024 |
![]() Monday, May 27, 2024 8:55 AM
Hi,I'm trying to use the Store/Forward Service for my domain and things are working well when I use the basic SMTP Service. However, when I try to get the service to push the email to my mail server using TLS/SSL, it won't get the mails through.I use a certificate from Let's Encrypt on the Synology NAS. And using Synology Mail Server as the backend.In my logs, I can see the following:2024-05-27T17:50:34+02:00 blackhole postfix/smtpd[4417]: connect from mx2.dynu.com[107.161.27.201]2024-05-27T17:50:34+02:00 blackhole postfix/smtpd[4417]: SSL_accept error from mx2.dynu.com[107.161.27.201]: -12024-05-27T17:50:34+02:00 blackhole postfix/smtpd[4417]: warning: TLS library problem: error:14209102:SSL routines:tls_early_post_process_client_hello:unsupported protocol:ssl/statem/statem_srvr.c:1685:2024-05-27T17:50:34+02:00 blackhole postfix/smtpd[4417]: lost connection after CONNECT from mx2.dynu.com[107.161.27.201]2024-05-27T17:50:34+02:00 blackhole postfix/smtpd[4417]: disconnect from mx2.dynu.com[107.161.27.201] commands=0/0I would be very grateful if anyone could help me resolve this.
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bcrooker Joined: 5/22/2024 |
![]() Wednesday, May 29, 2024 2:58 PM
Try reducing the TLS / SSL Profile Level to intermediate if it is set at Modern (Control Panel, Security, Advanced tab).
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JCvanDoorn Joined: 5/20/2024 |
![]() Saturday, June 1, 2024 11:13 AM
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Finepixels Joined: 7/3/2021 |
![]() Wednesday, June 19, 2024 6:28 AM
On your Dynu Email service mangement screen, try different options in the "Connection Security" drop down list.
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![](/content/images/icons/icon-big-pushpinyellow.png)
Saturday, September 7, 2024 5:08 PM