![]() ![]() Must use STARTTLS and modify the stream, added by Sparkpost. Server says it could send email WOOT WOOT! Finish the email by sending a single period Unlimited Contacts, Lists, Segments, and Audiences Unlimited Emails Unlimited Automation Unlimited Imagination No Monthly Subscription Learn More Buy Now Our Customers Love Us Interspire has by far the best support for any ESP I’ve used. Subject:testing from interspire via openssl Interspire Email Marketer - Interspire SELF-HOSTED EMAIL MARKETING SOFTWARE ALL FEATURES. Define I am done with email headers and ready to compose the emailģ54 3.0. Perl -MMIME::Base64 -e 'print encode_base64("") // Sparkpost SMTP server tells me I have authed and am ready to send an email It expects me to issue a challenge in a similar Base64 encoded format, so beforehand I encoded the password (a valid Sparkpost API key with "Send via SMTP" permission enabled) for Sparkpost SMTP connections: The SMTP server will issue a Base64 encoded password prompt Perl -MMIME::Base64 -e 'print encode_base64("SMTP_Injection") It expects me to issue a challenge in a similar Base64 encoded format, so beforehand I encoded the username for Sparkpost SMTP connections: ![]() The SMTP server will issue (since we 've already established a TLS secure tunnel) a Base64 encoded username prompt 334 VXNlcm5hbWU6 Once I saw the connection was established issue the EHLO command to the server to see what other commands are availableĮHLO smtp.sparkpostmail. ![]() com : 587 // A whole bunch of SSL chain stuffs would be seen here. >_ openssl s_client -starttls smtp -crlf -connect smtp.sparkpostmail. ![]()
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