We need to send email traffic to a third-party tool that connects with SSL requirements (port 587), in this process we use the libsasl2-modules library to carry out this activity without having favorable results:
2023-10-10T06:04:15.645329-04:00 antispam postfix/smtp[50957]: Trusted TLS connection established to mail.scbbs.net[144.76.195.177]:587: TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (prime256v1) server-signature RSA-PSS (2048 bits) server-digest SHA256
2023-10-10T06:04:16.650437-04:00 antispam postfix/smtp[50957]: 33D0AC13B9: to=<fernando.parra@et.bo>, relay=mail.scbbs.net[144.76.195.177]:587, delay=3.4, delays=0.06/0.05/3.1/0.24, dsn=5.0.0, status=bounced (host mail.scbbs.net[144.76.195.177] said: 554 Please use smtp authentication for port (587) 200.87.176.13 (in reply to MAIL FROM command))
2023-10-10T06:04:16.651388-04:00 antispam postfix/smtp[50957]: 33D0AC13B9: to=<zion.fern@gmail.com>, relay=mail.scbbs.net[144.76.195.177]:587, delay=3.4, delays=0.06/0.05/3.1/0.24, dsn=5.0.0, status=bounced (host mail.scbbs.net[144.76.195.177] said: 554 Please use smtp authentication for port (587) 200.87.176.13 (in reply to MAIL FROM command))
2023-10-10T06:04:16.652675-04:00 antispam postfix/smtp[50957]: 33D0AC13B9: to=<adolfo@scbbs.net>, relay=mail.scbbs.net[144.76.195.177]:587, delay=3.4, delays=0.06/0.05/3.1/0.24, dsn=5.0.0, status=bounced (host mail.scbbs.net[144.76.195.177] said: 554 Please use smtp authentication for port (587) 200.87.176.13 (in reply to MAIL FROM command))
2023-10-10T06:04:17.621319-04:00 antispam postfix/qmgr[6623]: 33D0AC13B9: removed
I request your collaboration to determine the solution or in any case another form of effective connection. Thank you very much for the help
2023-10-10T06:04:15.645329-04:00 antispam postfix/smtp[50957]: Trusted TLS connection established to mail.scbbs.net[144.76.195.177]:587: TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (prime256v1) server-signature RSA-PSS (2048 bits) server-digest SHA256
2023-10-10T06:04:16.650437-04:00 antispam postfix/smtp[50957]: 33D0AC13B9: to=<fernando.parra@et.bo>, relay=mail.scbbs.net[144.76.195.177]:587, delay=3.4, delays=0.06/0.05/3.1/0.24, dsn=5.0.0, status=bounced (host mail.scbbs.net[144.76.195.177] said: 554 Please use smtp authentication for port (587) 200.87.176.13 (in reply to MAIL FROM command))
2023-10-10T06:04:16.651388-04:00 antispam postfix/smtp[50957]: 33D0AC13B9: to=<zion.fern@gmail.com>, relay=mail.scbbs.net[144.76.195.177]:587, delay=3.4, delays=0.06/0.05/3.1/0.24, dsn=5.0.0, status=bounced (host mail.scbbs.net[144.76.195.177] said: 554 Please use smtp authentication for port (587) 200.87.176.13 (in reply to MAIL FROM command))
2023-10-10T06:04:16.652675-04:00 antispam postfix/smtp[50957]: 33D0AC13B9: to=<adolfo@scbbs.net>, relay=mail.scbbs.net[144.76.195.177]:587, delay=3.4, delays=0.06/0.05/3.1/0.24, dsn=5.0.0, status=bounced (host mail.scbbs.net[144.76.195.177] said: 554 Please use smtp authentication for port (587) 200.87.176.13 (in reply to MAIL FROM command))
2023-10-10T06:04:17.621319-04:00 antispam postfix/qmgr[6623]: 33D0AC13B9: removed
I request your collaboration to determine the solution or in any case another form of effective connection. Thank you very much for the help