Zjistil jsem ze maily poslane z jedne domeny vubec nedorazi do Gmailu (ani do SPAMu, ani do inboxu). Zacal jsem patrat a nasel v logu mailserveru tohle:
"SMTPC" 2568 271380 "2022-01-01 14:02:15.660" "64.233.184.27" "RECEIVED: 220 mx.google.com ESMTP u10si24020632wrs.130 - gsmtp"
"SMTPC" 2568 271380 "2022-01-01 14:02:15.661" "64.233.184.27" "SENT: HELO mailer2.domain.com"
"SMTPC" 2552 271380 "2022-01-01 14:02:15.679" "64.233.184.27" "RECEIVED: 250 mx.google.com at your service"
"SMTPC" 2552 271380 "2022-01-01 14:02:15.680" "64.233.184.27" "SENT: MAIL FROM:<user@domain.com>"
"SMTPC" 2552 271380 "2022-01-01 14:02:15.694" "64.233.184.27" "RECEIVED: 250 2.1.0 OK u10si24020632wrs.130 - gsmtp"
"SMTPC" 2552 271380 "2022-01-01 14:02:15.695" "64.233.184.27" "SENT: RCPT TO:<user@gmail.com>"
"SMTPC" 2568 271380 "2022-01-01 14:02:15.917" "64.233.184.27" "RECEIVED: 250 2.1.5 OK u10si24020632wrs.130 - gsmtp"
"SMTPC" 2568 271380 "2022-01-01 14:02:15.918" "64.233.184.27" "SENT: DATA"
"SMTPC" 2548 271380 "2022-01-01 14:02:15.933" "64.233.184.27" "RECEIVED: 354 Go ahead u10si24020632wrs.130 - gsmtp"
"SMTPC" 2548 271380 "2022-01-01 14:02:15.942" "64.233.184.27" "SENT: [nl]."
"SMTPC" 2548 271380 "2022-01-01 14:02:16.148" "64.233.184.27" "RECEIVED: 550-5.7.1 [31.47.105.19 19] Our system has detected that this message is[nl]550-5.7.1 likely suspicious due to the very low reputation of the sending[nl]550-5.7.1 domain. To best protect our users from spam, the message has been[nl]550-5.7.1 blocked. Please visit[nl]550 5.7.1 https://support.google.com/mail/answer/188131 for more information. u10si24020632wrs.130 - gsmtp"
"SMTPC" 2548 271380 "2022-01-01 14:02:16.149" "64.233.184.27" "SENT: QUIT"
znamena to, ze Gmail si email prevezme ale zahodi ho? Mail server na ma mail-tester.com skore 10/10, IP adresa neni na zadnych znamych blaclistech. Z domeny chodi maximalne desitky mailu tydne. Co se s tim da delat?