Hello. When set email account from Thunderbird or other email client (any location), I get error message in the mail.log (and fail2ban banned the ip): improper command pipelining after EHLO, or improper command pipelining after CONNECT.
In the past, this problem did not exist, it worked fine. If the account has been configured, we can send and receive mail. What could be the problem?
From mail.log:
2024-04-18T08:41:49.785147+02:00 isp postfix/smtps/smtpd[431782]: improper command pipelining after EHLO from dslC3E4F615.fixip.t-online.hu: QUIT\r\n
In the past, this problem did not exist, it worked fine. If the account has been configured, we can send and receive mail. What could be the problem?
From mail.log:
2024-04-18T08:41:49.785147+02:00 isp postfix/smtps/smtpd[431782]: improper command pipelining after EHLO from dslC3E4F615.fixip.t-online.hu: QUIT\r\n
Statistics: Posted by Shyciii — 2024-04-18 07:05 — Replies 0 — Views 23