Php
已解決 - Postfix SMTP 埠 Stange 活動
您好 ServerFault 社區，
我有一個基於 MySQL 的 Postfix 和 Dovecot 郵件伺服器，我遇到了 MySQL 的問題，所以我不得不重新安裝它，這就是問題開始發生的地方。
RoundCube 啟動器隨機給我（只是幾次）IMAP 伺服器連接錯誤。有時他說他無法載入電子郵件，因為他無法連接到 IMAP，我必須重新載入頁面才能使其再次工作。假設它發生了 50% 的時間。
但這不是主要問題，只是使用起來很無聊。
今天我的 SMTP 伺服器開始做一些奇怪的事情。讓我解釋。
我的 SMTP 和 IMAP 突然停止工作。我可以通過編輯 VPS 的名稱伺服器來修復 IMAP，這會導致傳入郵件的 DNS 解析出現問題。但 SMTP 仍然工作了一半。
SMTP 工作：
In localhost, By doing telnet port 25 in localhost, By doing telnet 587 also from other IPs, With Apple's Mail Client and not PHP Mail clients. (Ports 25 and 587), NON-PhP Mailer (I tried with www(.)gmass(.)co/smtp-test) On all the ports (25,465,587).SMTP 不起作用：
With PHP Mailer (I tried with WHMCS (Main Issue) and www(.)smtper(.)net) ,WHMCS any port SMTPER works on 25, Telnet to 465 Localhost and non, Telnet port 25 from external hosts, By doing telnet port 25 from external hosts (I tryed with Putty).我確信這不是 99.9999% 的防火牆問題，因為即使禁用 iPTables 我也有同樣的問題。要解決的主要問題是 PHPMailers 不工作，如 WHMCS。
我的 IPTables，你可以看到埠是打開的，也是因為我可以將它們與一些 SMTP 客戶端一起使用：
Chain INPUT (policy ACCEPT) target prot opt source destination f2b-sshd tcp -- anywhere anywhere multiport dports 2233 ACCEPT udp -- anywhere anywhere udp dpt:465 ACCEPT tcp -- anywhere anywhere tcp dpt:urd ACCEPT tcp -- anywhere anywhere tcp dpt:smtp f2b-sshd tcp -- anywhere anywhere multiport dports 2233 ACCEPT tcp -- anywhere anywhere tcp dpt:pop3s ACCEPT tcp -- anywhere anywhere tcp dpt:pop3 f2b-sshd tcp -- anywhere anywhere multiport dports 2233 ACCEPT udp -- anywhere anywhere udp dpt:11334 ACCEPT tcp -- anywhere anywhere tcp dpt:11334 ACCEPT udp -- anywhere anywhere udp dpt:19999 ACCEPT tcp -- anywhere anywhere tcp dpt:19999 ACCEPT tcp -- anywhere anywhere tcp dpt:32400 ACCEPT udp -- anywhere anywhere udp dpt:32400 ACCEPT udp -- anywhere anywhere udp dpt:8888 ACCEPT udp -- anywhere anywhere udp dpt:8096 ACCEPT tcp -- anywhere anywhere tcp dpt:8096 ACCEPT tcp -- anywhere anywhere tcp dpt:8888 ACCEPT udp -- anywhere anywhere udp dpt:50315 ACCEPT all -- anywhere anywhere ACCEPT tcp -- anywhere anywhere tcp dpt:webmin ACCEPT udp -- anywhere anywhere udp dpt:10000 f2b-sshd tcp -- anywhere anywhere multiport dports 2233 ACCEPT udp -- anywhere anywhere udp dpt:10040 ACCEPT udp -- anywhere anywhere udp dpt:10023 ACCEPT udp -- anywhere anywhere udp dpt:11332 ACCEPT udp -- anywhere anywhere udp dpt:mysql ACCEPT udp -- anywhere anywhere udp dpt:110 ACCEPT udp -- anywhere anywhere udp dpt:100 ACCEPT udp -- anywhere anywhere udp dpt:domain ACCEPT udp -- anywhere anywhere udp dpt:20 ACCEPT udp -- anywhere anywhere udp dpt:993 ACCEPT udp -- anywhere anywhere udp dpt:143 ACCEPT udp -- anywhere anywhere udp dpt:2233 ACCEPT udp -- anywhere anywhere udp dpt:465 ACCEPT udp -- anywhere anywhere udp dpt:587 ACCEPT udp -- anywhere anywhere udp dpt:1988 ACCEPT udp -- anywhere anywhere udp dpt:http-alt ACCEPT udp -- anywhere anywhere udp dpt:22 ACCEPT udp -- anywhere anywhere udp dpt:25 ACCEPT udp -- anywhere anywhere udp dpt:80 ACCEPT udp -- anywhere anywhere udp dpt:443 ACCEPT udp -- anywhere anywhere udp dpt:2233 ACCEPT tcp -- anywhere anywhere tcp dpt:10040 ACCEPT tcp -- anywhere anywhere tcp dpt:10023 ACCEPT tcp -- anywhere anywhere tcp dpt:11332 ACCEPT tcp -- anywhere anywhere tcp dpt:mysql ACCEPT tcp -- anywhere anywhere tcp dpt:pop3 ACCEPT tcp -- anywhere anywhere tcp dpt:100 ACCEPT tcp -- anywhere anywhere tcp dpt:domain ACCEPT tcp -- anywhere anywhere tcp dpt:ftp-data ACCEPT tcp -- anywhere anywhere tcp dpt:imaps ACCEPT tcp -- anywhere anywhere tcp dpt:imap2 ACCEPT tcp -- anywhere anywhere tcp dpt:2233 ACCEPT tcp -- anywhere anywhere tcp dpt:urd ACCEPT tcp -- anywhere anywhere tcp dpt:submission ACCEPT tcp -- anywhere anywhere tcp dpt:1988 ACCEPT tcp -- anywhere anywhere tcp dpt:http-alt ACCEPT tcp -- anywhere anywhere tcp dpt:ssh ACCEPT tcp -- anywhere anywhere tcp dpt:smtp ACCEPT tcp -- anywhere anywhere tcp dpt:http ACCEPT tcp -- anywhere anywhere tcp dpt:https ACCEPT tcp -- anywhere anywhere tcp dpt:2233 ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED DROP all -- anywhere anywhere Chain FORWARD (policy ACCEPT) target prot opt source destination ACCEPT all -- anywhere anywhere ACCEPT all -- anywhere anywhere Chain OUTPUT (policy ACCEPT) target prot opt source destination ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED Chain f2b-sshd (4 references) target prot opt source destination RETURN all -- anywhere anywhere RETURN all -- anywhere anywhere RETURN all -- anywhere anywhere RETURN all -- anywhere anywhere感謝您給我的任何幫助。再見！
PS：在幾週前的 MySQL 編輯之前，即使使用基於 PHP 的郵件客戶端，一切都執行良好，但我不知道這是否是郵件主機或 PHP 主機（WHMCS 和 SMTPER）的問題，就像某些網站和 SMTP 一樣客戶一切正常。例如 Apple 的電子郵件。
編輯：我在控制台中也有 Postfix 垃圾郵件：
Oct 30 11:06:07 mail.indst.eu systemd[1]: Starting Postfix Mail Transport Agent... Oct 30 11:06:07 mail.indst.eu systemd[1]: Started Postfix Mail Transport Agent. Oct 30 11:06:07 mail.indst.eu systemd[1]: Reloading Postfix Mail Transport Agent. Oct 30 11:06:07 mail.indst.eu systemd[1]: Reloaded Postfix Mail Transport Agent. Oct 30 11:06:07 mail.indst.eu systemd[1]: Reloading Postfix Mail Transport Agent. Oct 30 11:06:07 mail.indst.eu systemd[1]: Reloaded Postfix Mail Transport Agent.
謝謝，我自己解決了這個問題。對於 PHP Mailer，問題在於 cPanel。我必須在 WHM 中允許外部 SMTP 伺服器。
感謝您的幫助。