We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

Avatar for Username

Търсене в помощните статии

Избягвайте измамите при поддръжката. Никога няма да ви помолим да се обадите или изпратите SMS на телефонен номер или да споделите лична информация. Моля, докладвайте подозрителна активност на "Докладване за злоупотреба".

Научете повече

Тази тема беше архивирана. Моля, задайте нов въпрос ако имате нужда от помощ.

Unable to Send Mail

  • 1 отговор
  • 0 имат този проблем
  • 1 изглед
  • Последен отговор от david

samgerstner1222
samgerstner1222
more options

I am using Thunderbird to access my email server that is running based on Postfix & Dovecot. The server is setup to require StartTLS encryption, and accepts IMAP connections on port 143 and SMTP connections on port 587. The server will reject any login attempts on port 25 for unsecured SMTP. When I setup the account in Thunderbird, I specify these ports and set the connection security to STARTTLS.

I am able to retrieve emails without issue using IMAP, but when I attempt to send a message using SMTP, I get the following error: "An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: * OK [CAPABILITY IMAP4rev1 SASL-IR-LOGIN-REFERRALS ID ENABLE IDLE LITERAL + STARTTLS LOGINDISABLED] Dovecot (Ubuntu) ready..."

It appears as if Thunderbird is attempting to send the message over port 25 instead of port 587 using StartTLS as specified. I have already tried removing and re-adding the account to Thunderbird. I know my SMTP configuration is okay because I am able to send emails from port 587 without issue from my webmail client (Roundcube).

I am using Thunderbird to access my email server that is running based on Postfix & Dovecot. The server is setup to require StartTLS encryption, and accepts IMAP connections on port 143 and SMTP connections on port 587. The server will reject any login attempts on port 25 for unsecured SMTP. When I setup the account in Thunderbird, I specify these ports and set the connection security to STARTTLS. I am able to retrieve emails without issue using IMAP, but when I attempt to send a message using SMTP, I get the following error: "An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: * OK [CAPABILITY IMAP4rev1 SASL-IR-LOGIN-REFERRALS ID ENABLE IDLE LITERAL + STARTTLS LOGINDISABLED] Dovecot (Ubuntu) ready..." It appears as if Thunderbird is attempting to send the message over port 25 instead of port 587 using StartTLS as specified. I have already tried removing and re-adding the account to Thunderbird. I know my SMTP configuration is okay because I am able to send emails from port 587 without issue from my webmail client (Roundcube).
Прикачени екранни снимки

Всички отговори (1)

david
david
  • Top 10 Contributor
more options

Have you tried various authentication methods.