Tag Archives: SMTP

SMTP errors during sending mail

The classic SMTP error code consists of three digits (e.g. 220 mail.domain.tld SMTP ready.). The ESMTP status codes are additions to the classic code and consist of digits devided by dots (5.1.1 User unknown.). Many times you see both types … Continue reading

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Mail server, and what you should ALWAYS bear in mind

Overview SMTP, POP3 and IMAP are TCP/IP protocols used for mail delivery. If you plan to set up an email server such as MailServer, you must know what they are used for. Each protocol is just a specific set of … Continue reading

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