SMTP

[Jens-Seidel]

'version' => '14.0.0.19',

Steps to reproduce

To rule out errors in the interface, I looked at the "config.php" and what is changing in it.

'mail_smtpmode' => 'smtp',
'mail_smtpauthtype' => 'LOGIN',
'mail_smtpauth' => 1,
'mail_smtpname' => 'anyname@anydomain.com',
'mail_smtppassword' => 'anypass',
'mail_from_address' => 'anyname',
'mail_smtphost' => 'smtp.anydomain.com',
'mail_smtpsecure' => 'ssl',
'mail_smtpport' => '465',
'mail_domain' => 'anydomain.com',

SMTP TLS/SSL 465 = (Fehler: Connection could not be established with host smtp.anydomain.com [ #0])

'mail_smtpmode' => 'smtp',
'mail_smtpauthtype' => 'LOGIN',
'mail_from_address' => 'anyname',
'mail_smtphost' => 'smtp.anydomain.com',
'mail_smtpsecure' => 'tls',
'mail_smtpport' => '587',
'mail_domain' => 'anydomain.com',
'mail_smtpauth' => 1,
'mail_smtpname' => 'anyname@anydomain.com',
'mail_smtppassword' => 'anypass',

SMTP STARTTLS 587 = (Fehler: Unable to connect with TLS encryption)
The same happens when I use the server IP

stream_socket_enable_crypto(): Peer certificate CN=myhosterdomain' did not match expected CN=smtp.anydomain.com' at /var/www/html/nextcloud/3rdparty/swiftmailer/swiftmailer/lib/classes/Swift/Transport/StreamBuffer.php#94

So if I understand correctly, he does not like the cert, but mail programs Airmail & Apple mail runs without a problem. Does anyone have a suggestion? Thank you very much.

[nextcloud-bot]

GitMate.io thinks possibly related issues are #3653 (SMTP sender name is incorrect), #7952 (SMTP over STARTTLS on 587 not work), #11218 (Missing "None" when displaying smtp auth options), #2271 (Allow multiple SMTP servers ), and #4354 (SMTP password visible in admin page HTML ).

[xf-]

I think your mailprogramm uses stuff like autoconf/autodiscovery.domain or other auto config. Use the domain from the certificate.

[kesselb]

Thanks for reporting issues back to Nextcloud 👍 This is the issue tracker of Nextcloud, if you have any support question please check out https://nextcloud.com/support

This looks more like a configuration issue than a software issue. Please read carefully what @xf- suggested. I think he gave you a good hint.

Example:

• Your Domain: mydomain.com
• Mailserver: provider.com

Your hosting provider setup autoconf.mydomain.com with information for airmail or apple mail. Your client read this information and connects than to provider.com (since the mailserver certificate is only valid for provider.com).

Another common issue is that your mailserver provide a valid certificate but does not send a intermediate certificate.

You can check configuration for your mailserver here https://ssl-tools.net/mailservers

[Jens-Seidel]

🤦🏻‍♂️ thanks for this hint and thanks to @xf-