Qondisa i-Postfix ku-relay yeposi, hhayi ku-web proxy

relayhost = proxy.example.net:3128 ibonakala inengqondo kuze kube yilapho izinhlangothi zombili ziqala ukukhuluma. I-Postfix ilindele umlingani we-SMTP. I-web proxy ku-3128 ilindele isicelo se-HTTP proxy. Akekho othola ingxoxo ayilindile.

Uma inethiwekhi ihlinzeka nge-relay yeposi evunyelwe, hlela leyo sevisi ye-SMTP esikhundleni salokho. Isimo esivamile yilesi:

relayhost = [smtp-relay.example.net]:587

Igama le-host ne-port kuyizibonelo. Amabakaki ayisikwele avimba ukusesha kwe-MX kwalelo gama le-relay. Awanezi HTTP CONNECT, TLS noma ukuqinisekisa. Hlela ngokwehlukana izilungiselelo ze-submission, SASL ne-TLS ezidingwa yi-relay.

Ama-akhawunti womabili nawo angahluka. Iphasiwedi eyamukelwa yi-web proxy ayiyona ngokuzenzakalela imininingwane yokuthumela iposi, futhi i-relay isengala umthumeli ngemuva kokwamukela ukuxhumana.

Uma indlela eyodwa evunyelwe iyithuluzi elingaphansi?

I-HTTP proxy ingathwala i-SMTP ngokusebenzisa i-CONNECT uma ivumela indawo nembobo. Lokho akwenzi noma yiliphi iklayenti le-SMTP ukuthi likhiqize i-CONNECT. Ithuluzi elifana ne-curl linokukhetha okucacile kwethuluzi le-proxy; ukusetha i-relayhost ye-Postfix kungenye indlela yokuxhumana.

Ukudluliswa kwe-SSH okugxilile noma i-adaptha yezokuthutha yasendaweni eyakhiwe ngenhloso ingaveza isevisi eyodwa ye-SMTP evunyelwe njengendawo yokugcina ye-TCP yasendaweni. Kuleso sakhiwo i-Postfix ikhuluma i-SMTP nendawo yokugcina, futhi i-adaptha ihlinzeka okunye ukuthutha. Kugcine kunomkhawulo futhi ugcine ubunikazi be-TLS besiphakamiso se-imeyili esihlosiwe: ukushintsha ikheli lokuxhumana ku-loopback kungathinta inqubomgomo yesitifiketi esekelwe egameni.

Khetha i-relay yeposi uma kuyisevisi ehlinzekwa umqhubi wenethiwekhi. Inikeza umugqa, inqubomgomo yomthumeli namaphutha okulethwa ikhaya eliqonda i-SMTP. Ukuhlelwa kwe-web proxy kuphela akunikezi noma yimuphi waleyo misebenzi yeposi.