I do not know how to correct an error in someone else's SMTP server.
That error indicates that the remote server is sending SMTP commands out
of sequence.
The 'mail from' command should precede the 'rcpt to' command. Note
gmail's SMTP server:
# telnet smtp.google.com 25
Trying 74.125.142.27...
Connected to smtp.google.com.
Escape character is '^]'.
220 mx.google.com ESMTP 98e67ed59e1d1-2f7e6c03885si5308997a91.161 - gsmtp
ehlo mail.somedomain.tld
250-mx.google.com at your service, [xxx.xxx.xxx.xxx]
250-SIZE 157286400
250-8BITMIME
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-CHUNKING
250 SMTPUTF8
rcpt to: [email protected]
503-5.5.1 Bad sequence of commands. For more information, go to
503-5.5.1 https://support.google.com/a/answer/3221692 and review RFC 5321
503 5.5.1 specifications. 98e67ed59e1d1-2f7e6c03885si5308997a91.161 - gsmtp
There is nothing unusual about an SMTP server requiring SMTP command in
the correct order.
Eric
On 1/23/2025 6:07 AM, Qmail wrote:
Hi Biju.
I am not sure it's good idea but try changing tls-level to 'none'
in /etc/spamdyke/spamdyke.conf
/
Den 23.01.2025 kl. 12.00 skrev [email protected]:
TLS reason: 503_MAIL_first_(#5.5.1)
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