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Twitter- Server operating system version
- Ubuntu 24.04
- Plesk version and microupdate number
- 18.0.71 Update 2
Hello everyone
After the last Plesk update, mailing no longer works properly. The following symptoms occur:
- Outlook takes about 5 minutes to send emails. These remain stuck in the outbox folder for a long time
- When setting up the Outlook mailbox for the first time, the initial connection sometimes works and sometimes doesn't. It varies, and often a timeout error occurs
- In Thunderbird, the sent email is immediately changed to draft. Sending works sporadically, but error messages often appear.
- I changed the IMAP & SMTP address and checked the certificate behind it. Everything is compliant.
I reinstalled the entire Plesk server, then migrated the websites, and now the same thing is happening. The logs don't look promising; I found the following parts in them:
The mail server certificate was issued with Lets Encrypt.
What's unusual is that after the reinstallation, email delivery is not working again. The Plesk release log mentioned some security updates, but I can't figure out exactly what was changed. However, I've been having problems for 3 days now; it's not possible to send emails. Receiving emails is also significantly delayed, but it works. Has anyone had similar problems? I don't know what to do.
Many thanks
After the last Plesk update, mailing no longer works properly. The following symptoms occur:
- Outlook takes about 5 minutes to send emails. These remain stuck in the outbox folder for a long time
- When setting up the Outlook mailbox for the first time, the initial connection sometimes works and sometimes doesn't. It varies, and often a timeout error occurs
- In Thunderbird, the sent email is immediately changed to draft. Sending works sporadically, but error messages often appear.
- I changed the IMAP & SMTP address and checked the certificate behind it. Everything is compliant.
I reinstalled the entire Plesk server, then migrated the websites, and now the same thing is happening. The logs don't look promising; I found the following parts in them:
The mail server certificate was issued with Lets Encrypt.
What's unusual is that after the reinstallation, email delivery is not working again. The Plesk release log mentioned some security updates, but I can't figure out exactly what was changed. However, I've been having problems for 3 days now; it's not possible to send emails. Receiving emails is also significantly delayed, but it works. Has anyone had similar problems? I don't know what to do.
Many thanks
