Hello, I have recently configured Mailcow-dockerized as a mail server with my own domain. After setting everything up (my mailbox, opening the needed ports, etc.) I configured my Gmail account to be able to receive mails from my mailcow mailbox there using POP3S, but I am having random authentication issues. Here is a screenshot of Gmail’s POP3 history:
I have checked Dovecot’s logs and this is the error I am getting:
Jun 3 08:11:36 8f7735e4bee1 dovecot: auth-worker(19415): HTTP request failed with closed for user mymailbox@mydomain.com
Jun 3 08:11:36 8f7735e4bee1 dovecot: auth-worker(19415): conn unix:auth-worker (pid=136,uid=401): auth-worker<3>: lua(mymailbox@mydomain.com,2a00:1450:4864:24::,<CV7FwKQ255MqABRQSGQAJAAAAAAAAAAA>): Password mismatch (SHA1 of given password: blablabla)
Jun 3 08:11:38 8f7735e4bee1 dovecot: pop3-login: Disconnected: Connection closed (auth failed, 1 attempts in 2 secs): user=<mymailbox@mydomain.com>, method=PLAIN, rip=2a00:1450:4864:24::, lip=fd4d:6169:6c63:6f77::a, TLS: Connection closed, TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
I have also created and configured an App password with all the protocols and updated it in my Gmail.
As I am no expert in this field, I am using the default configuration for everything except the domain and reverse proxy (I am using Nginx and followed the documentation guide for that case).
I have looked for posts with similar issues but found none. Can anybody help me?
Thanks!