Unauthorized Barracuda Spam Firewall message relaying

If there is a whitelisted domain any mail originated from this domain is relayed...

Релеинг через SMTP-службу в Windows 2000 (message relaying)

Ошибка в авторизации позволяет использовать SMTP без авторизации...

Релеинг через poprelayd (message relaying)

Можно обмануть защиту от релеинга через Pop-before-smtp подменив запись в лог-файле...

lotus.notes.relay.txt

Date: Mon, 14 Jun 1999 17:40:35 +0100 From: Robert Lister To: [email protected] Subject: Lotus Notes Relay Following postings about NTMail having open relaying ability, in certain situations I have identified a problem with the Lotus SMTP MTA right up to v4.6.4, have yet to test...