Я использую mailgun в качестве исходящего шлюза (ретранслятора) от SmarterMail 16. Мы получили пару отскоков с указанием «500 'line too long'". Вот фрагмент журнала.
[2020.02.26] 09:16:12 [57230] Sending remote mail to: *****@gmail.com
[2020.02.26] 09:16:12 [57230] Initiating connection to 3.228.209.214
[2020.02.26] 09:16:12 [57230] Connecting to 3.228.209.214:587 (Id: 1)
[2020.02.26] 09:16:12 [57230] Connection to 3.228.209.214:587 from x.x.x.x:54060 succeeded (Id: 1)
[2020.02.26] 09:16:12 [57230] RSP: 220 ak47 ESMTP ready
[2020.02.26] 09:16:12 [57230] CMD: EHLO *****.net
[2020.02.26] 09:16:12 [57230] RSP: 250-ak47
[2020.02.26] 09:16:12 [57230] RSP: 250-AUTH PLAIN LOGIN
[2020.02.26] 09:16:12 [57230] RSP: 250-SIZE 52428800
[2020.02.26] 09:16:12 [57230] RSP: 250-8BITMIME
[2020.02.26] 09:16:12 [57230] RSP: 250-ENHANCEDSTATUSCODES
[2020.02.26] 09:16:12 [57230] RSP: 250-SMTPUTF8
[2020.02.26] 09:16:12 [57230] RSP: 250 STARTTLS
[2020.02.26] 09:16:12 [57230] CMD: STARTTLS
[2020.02.26] 09:16:12 [57230] RSP: 220 2.0.0 Start TLS
[2020.02.26] 09:16:12 [57230] CMD: EHLO *****.net
[2020.02.26] 09:16:12 [57230] RSP: 250-ak47
[2020.02.26] 09:16:12 [57230] RSP: 250-AUTH PLAIN LOGIN
[2020.02.26] 09:16:12 [57230] RSP: 250-SIZE 52428800
[2020.02.26] 09:16:12 [57230] RSP: 250-8BITMIME
[2020.02.26] 09:16:12 [57230] RSP: 250-ENHANCEDSTATUSCODES
[2020.02.26] 09:16:12 [57230] RSP: 250 SMTPUTF8
[2020.02.26] 09:16:12 [57230] CMD: AUTH LOGIN
[2020.02.26] 09:16:12 [57230] RSP: 334 VXNlcm5hbWU6
[2020.02.26] 09:16:13 [57230] RSP: 334 UGFzc3dvcmQ6
[2020.02.26] 09:16:13 [57230] RSP: 235 2.0.0 OK
[2020.02.26] 09:16:13 [57230] CMD: MAIL FROM:<*****@*****.com> SIZE=3839447
[2020.02.26] 09:16:13 [57230] RSP: 250 Sender address accepted
[2020.02.26] 09:16:13 [57230] CMD: RCPT TO:<*****@gmail.com>
[2020.02.26] 09:16:13 [57230] RSP: 250 Recipient address accepted
[2020.02.26] 09:16:13 [57230] CMD: DATA
[2020.02.26] 09:16:13 [57230] RSP: 354 Continue
[2020.02.26] 09:16:17 [57230] RSP: 500 Line too long
[2020.02.26] 09:16:17 [57230] CMD: QUIT
[2020.02.26] 09:16:18 [57230] RSP: 500 Line too long
[2020.02.26] 09:16:18 [57230] Bounce email written to -1641819557231.eml
[2020.02.26] 09:16:18 [57230] Delivery for *****@*****.com to *****@*****.com has completed (Bounced)
[2020.02.26] 09:16:18 [57230] Removed from RemoteDeliveryQueue (0 queued or processing)
[2020.02.26] 09:16:20 [57230] Removing Spool message: Killed: False, Failed: False, Finished: True
[2020.02.26] 09:16:20 [57230] Delivery finished for *****@*****.com at 9:16:20 AM [id:x-1641819557230]
Я не нахожу упоминания об этом сообщении в журнале MailGun.
У кого-нибудь есть идеи?
Спасибо, Джо