Unrecognised command "MAIL FROM:<[address]>"

[dpeuscher]

When I try to use MailHog in a Zend Framework 1 Application via SMTP, I get an exception with the message "Unrecognised command". After sone debugging I found the SMTP-command "MAIL FROM:<[e-mail-address]>" responsible for the exception.

[ian-kent]

If possible, could you paste the MailHog log output for this bug - I can't reproduce it locally.

Tried against MailHog v0.03 and it works (but from telnet, not Zend):

~ ❯❯❯ telnet localhost 1025
Trying ::1...
Connected to localhost.
Escape character is '^]'.
220 mailhog.example ESMTP Go-MailHog
EHLO localhost
250-Hello localhost
250-PIPELINING
250 AUTH EXTERNAL CRAM-MD5 LOGIN PLAIN
MAIL FROM:<e-mail-address>
250 Sender e-mail-address ok
RCPT TO:<e-mail-address>
250 Recipient e-mail-address ok
DATA
354 End data with <CR><LF>.<CR><LF>
Some data

.
250 Ok: queued as 54510171a54d751d5c000001
QUIT
221 Bye
Connection closed by foreign host.

[dpeuscher]

Tail of the log-file:

2014/10/29 17:04:09 [SMTP 127.0.0.1:60610, 0] Starting session
2014/10/29 17:04:09 [SMTP 127.0.0.1:60610, 0] Sent 26 bytes: 'flug.c24 ESMTP Go-MailHog
'
2014/10/29 17:04:09 [SMTP 127.0.0.1:60610, 0] Received 16 bytes: 'EHLO localhost^M
'
2014/10/29 17:04:09 [SMTP 127.0.0.1:60610, 0] Processing line: EHLO localhost
2014/10/29 17:04:09 [SMTP 127.0.0.1:60610, 0] In state 0, got command 'EHLO', args 'localhost'
2014/10/29 17:04:09 [SMTP 127.0.0.1:60610, 0] Got EHLO command, switching to MAIL state
2014/10/29 17:04:09 [SMTP 127.0.0.1:60610, 3] Sent 16 bytes: 'Hello localhost
'
2014/10/29 17:04:09 [SMTP 127.0.0.1:60610, 3] Sent 11 bytes: 'PIPELINING
'
2014/10/29 17:04:09 [SMTP 127.0.0.1:60610, 3] Sent 35 bytes: 'AUTH EXTERNAL CRAM-MD5 LOGIN PLAIN
'
2014/10/29 17:04:12 [SMTP 127.0.0.1:60610, 3] Received 6 bytes: 'RSET^M
'
2014/10/29 17:04:12 [SMTP 127.0.0.1:60610, 3] Processing line: RSET
2014/10/29 17:04:12 [SMTP 127.0.0.1:60610, 3] In state 3, got command 'RSET', args ''
2014/10/29 17:04:12 [SMTP 127.0.0.1:60610, 3] Got RSET command, switching to ESTABLISH state
2014/10/29 17:04:12 [SMTP 127.0.0.1:60610, 0] Sent 3 bytes: 'Ok
'
2014/10/29 17:04:13 [SMTP 127.0.0.1:60610, 0] Received 29 bytes: 'MAIL FROM:<[Mail-Address]>^M
'
2014/10/29 17:04:13 [SMTP 127.0.0.1:60610, 0] Processing line: MAIL FROM:<[Mail-Address]>
2014/10/29 17:04:13 [SMTP 127.0.0.1:60610, 0] In state 0, got command 'MAIL', args 'FROM:<[Mail-Address]>'
2014/10/29 17:04:13 [SMTP 127.0.0.1:60610, 0] Got unknown command for ESTABLISH state: 'MAIL'
2014/10/29 17:04:13 [SMTP 127.0.0.1:60610, 0] Sent 21 bytes: 'Unrecognised command
'
2014/10/29 17:04:20 [SMTP 127.0.0.1:60610, 0] Received 6 bytes: 'QUIT^M
'
2014/10/29 17:04:20 [SMTP 127.0.0.1:60610, 0] Processing line: QUIT
2014/10/29 17:04:20 [SMTP 127.0.0.1:60610, 0] In state 0, got command 'QUIT', args ''
2014/10/29 17:04:20 [SMTP 127.0.0.1:60610, 0] Got QUIT command
2014/10/29 17:04:20 [SMTP 127.0.0.1:60610, 0] Sent 4 bytes: 'Bye
'
2014/10/29 17:04:20 [SMTP 127.0.0.1:60610, 0] Connection closed by remote host

Edit: Don't want the mail to be public available :)

[ian-kent]

Thanks for the info. Can understand why you edited it, but I think that removed the bug.

The example you now give works in Go-MailHog:

~ ❯❯❯ telnet localhost 1025
Trying ::1...
Connected to localhost.
Escape character is '^]'.
220 mailhog.example ESMTP Go-MailHog
EHLO localhost
250-Hello localhost
250-PIPELINING
250 AUTH EXTERNAL CRAM-MD5 LOGIN PLAIN
MAIL FROM:<[Mail-Address]>
250 Sender [Mail-Address] ok
QUIT
221 Bye
Connection closed by foreign host.

The example you originally gave didn't, because it wasn't valid SMTP syntax (it was missing the <> around the email address, e.g. MAIL FROM:email@example.com), so I suspect its a bug in the Zend SMTP client, which wouldn't be supported by Google either:

~ ❯❯❯ telnet gmail-smtp-in.l.google.com 25                                                                                                    
Trying 64.233.167.27...
Connected to gmail-smtp-in.l.google.com.
Escape character is '^]'.
220 mx.google.com ESMTP ez14si7285624wid.57 - gsmtp
EHLO localhost
250-mx.google.com at your service, [***.***.***.***]
250-SIZE 35882577
250-8BITMIME
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-CHUNKING
250 SMTPUTF8
MAIL FROM:email@example.com
555 5.5.2 Syntax error. ez14si7285624wid.57 - gsmtp
QUIT
221 2.0.0 closing connection ez14si7285624wid.57 - gsmtp
Connection closed by foreign host.

Edit I couldn't find an SMTP RFC showing that syntax as valid, but happy for you to reopen the bug if there is one

[ian-kent]

If its using the latest Zend Framework 1 or 2, it shouldn't be happening:
https://github.com/zendframework/zf2/blob/master/library/Zend/Mail/Protocol/Smtp.php#L239
https://github.com/zendframework/zf1/blob/master/library/Zend/Mail/Protocol/Smtp.php#L260

[dpeuscher]

Actually there were <> and I was using ZF 1.12.7. I updated to 1.12.9 to be
sure to have the most recent version. This did not fix the issue. Same
result:

2014/10/29 17:44:09 [SMTP 127.0.0.1:60897, 0] Starting session
2014/10/29 17:44:09 [SMTP 127.0.0.1:60897, 0] Sent 26 bytes: 'flug.c24
ESMTP Go-MailHog
'
2014/10/29 17:44:09 [SMTP 127.0.0.1:60897, 0] Received 16 bytes: 'EHLO
localhost^M
'
2014/10/29 17:44:09 [SMTP 127.0.0.1:60897, 0] Processing line: EHLO
localhost
2014/10/29 17:44:09 [SMTP 127.0.0.1:60897, 0] In state 0, got command
'EHLO', args 'localhost'
2014/10/29 17:44:09 [SMTP 127.0.0.1:60897, 0] Got EHLO command, switching
to MAIL state
2014/10/29 17:44:09 [SMTP 127.0.0.1:60897, 3] Sent 16 bytes: 'Hello
localhost
'
2014/10/29 17:44:09 [SMTP 127.0.0.1:60897, 3] Sent 11 bytes: 'PIPELINING
'
2014/10/29 17:44:09 [SMTP 127.0.0.1:60897, 3] Sent 35 bytes: 'AUTH
EXTERNAL CRAM-MD5 LOGIN PLAIN
'
2014/10/29 17:44:09 [SMTP 127.0.0.1:60897, 3] Received 6 bytes: 'RSET^M
'
2014/10/29 17:44:09 [SMTP 127.0.0.1:60897, 3] Processing line: RSET
2014/10/29 17:44:09 [SMTP 127.0.0.1:60897, 3] In state 3, got command
'RSET', args ''
2014/10/29 17:44:09 [SMTP 127.0.0.1:60897, 3] Got RSET command, switching
to ESTABLISH state
2014/10/29 17:44:09 [SMTP 127.0.0.1:60897, 0] Sent 3 bytes: 'Ok
'
2014/10/29 17:44:09 [SMTP 127.0.0.1:60897, 0] Received 29 bytes: 'MAIL
FROM:<[E-Mail-Address]>^M
'
2014/10/29 17:44:09 [SMTP 127.0.0.1:60897, 0] Processing line: MAIL
FROM:<[E-Mail-Address]>
2014/10/29 17:44:09 [SMTP 127.0.0.1:60897, 0] In state 0, got command
'MAIL', args 'FROM:<[E-Mail-Address]>'
2014/10/29 17:44:09 [SMTP 127.0.0.1:60897, 0] Got unknown command for
ESTABLISH state: 'MAIL'
2014/10/29 17:44:09 [SMTP 127.0.0.1:60897, 0] Sent 21 bytes: 'Unrecognised
command
'
2014/10/29 17:44:09 [SMTP 127.0.0.1:60897, 0] Received 6 bytes: 'QUIT^M
'
2014/10/29 17:44:09 [SMTP 127.0.0.1:60897, 0] Processing line: QUIT
2014/10/29 17:44:09 [SMTP 127.0.0.1:60897, 0] In state 0, got command
'QUIT', args ''
2014/10/29 17:44:09 [SMTP 127.0.0.1:60897, 0] Got QUIT command
2014/10/29 17:44:09 [SMTP 127.0.0.1:60897, 0] Sent 4 bytes: 'Bye
'
2014/10/29 17:44:09 [SMTP 127.0.0.1:60897, 0] Connection closed by remote
host

2014-10-29 18:21 GMT+01:00 Ian Kent notifications@github.com:

If its using the latest Zend Framework 1 or 2, it shouldn't be happening:

https://github.com/zendframework/zf2/blob/master/library/Zend/Mail/Protocol/Smtp.php#L239

https://github.com/zendframework/zf1/blob/master/library/Zend/Mail/Protocol/Smtp.php#L260

—
Reply to this email directly or view it on GitHub
#3 (comment).

[ian-kent]

Thanks for the update - just spotted it, RSET is putting Go-MailHog back in ESTABLISH state, which is expecting another HELO/EHLO.