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-   -   Postfix + postfixadmin = SMTP errors... (http://www.howtoforge.com/forums/showthread.php?t=36922)

Rashef 23rd June 2009 11:41

Postfix + postfixadmin = SMTP errors...
 
I installed Postfix with Postfixadmin some weeks ago. I've been able to solve most of issues I met (several errors from receiving servers) but there is something I cannot understand yet.

This is what I get from a receiving SMTP server:

Code:

Jun 23 09:57:43 node1 postfix/smtp[3950]: send attr reason = host
mail.domain.it[abc.abc.abc.abc] refused to talk to me: 550
Jun 23 09:57:43 node1 postfix/smtp[3950]: 418E098004C2:
to=<xxxxx...@mediofactoring.it>, relay=mail.domain.it[abc.abc.abc.abc]:
25, delay=80211, delays=80211/0.03/0.45/0, dsn=4.0.0, status=deferred
(host mail.domain.it[abc.abc.abc.abc] refused to talk to me: 550 )

I also tried:

Code:

# telnet mail.domain.it 25
Trying abc.abc.abc.abc...
Connected to mail.domain.it (abc.abc.abc.abc).
Escape character is '^]'.
550
Connection closed by foreign host.

What's that? A sort of blacklist? :(

UPDATE
I checked my IP at http://mxtoolbox.com/blacklists.aspx but it seems it's not blacklisted at all... :-(

falko 24th June 2009 15:49

There might be some other blacklist where your server is on.
Is your server hosted on a dynamic IP address?

Rashef 24th June 2009 18:07

No, the server is connected to a public IP address, it's not open relay, the SPF check is passed, the DNS reverse lookup is ok.

I have another case when sending mail to one of the biggest italian provider. The log is long but it's the only way to understand:

Code:

Jun 24 17:15:30 mail postfix/smtp[12774]: smtp_parse_destination: telecomitalia.it smtp
Jun 24 17:15:30 mail postfix/smtp[12774]: connecting to telecomitalia.it port 25
Jun 24 17:15:30 mail postfix/smtp[12774]: dns_query: telecomitalia.it (MX): OK
Jun 24 17:15:30 mail postfix/smtp[12774]: dns_get_answer: type MX for telecomitalia.it
Jun 24 17:15:30 mail postfix/smtp[12774]: smtp_addr_one: host mx4.telecomitalia.it
Jun 24 17:15:30 mail postfix/smtp[12774]: lookup mx4.telecomitalia.it type A flags 128
Jun 24 17:15:30 mail postfix/smtp[12774]: dns_query: mx4.telecomitalia.it (A): OK
Jun 24 17:15:30 mail postfix/smtp[12774]: dns_get_answer: type A for mx4.telecomitalia.it
Jun 24 17:15:30 mail postfix/smtp[12774]: lookup mx4.telecomitalia.it type AAAA flags 128
Jun 24 17:15:55 mail postfix/smtp[12774]: dns_query: mx4.telecomitalia.it (AAAA): Host found but no data record of requested type
Jun 24 17:15:55 mail postfix/smtp[12774]: smtp_addr_one: host mx5.telecomitalia.it
Jun 24 17:15:55 mail postfix/smtp[12774]: lookup mx5.telecomitalia.it type A flags 128
Jun 24 17:15:55 mail postfix/smtp[12774]: dns_query: mx5.telecomitalia.it (A): OK
Jun 24 17:15:55 mail postfix/smtp[12774]: dns_get_answer: type A for mx5.telecomitalia.it
Jun 24 17:15:55 mail postfix/smtp[12774]: lookup mx5.telecomitalia.it type AAAA flags 128
Jun 24 17:16:06 mail postfix/smtp[12774]: dns_query: mx5.telecomitalia.it (AAAA): Host found but no data record of requested type
Jun 24 17:16:06 mail postfix/smtp[12774]: smtp_addr_one: host mx6.telecomitalia.it
Jun 24 17:16:06 mail postfix/smtp[12774]: lookup mx6.telecomitalia.it type A flags 128
Jun 24 17:16:06 mail postfix/smtp[12774]: dns_query: mx6.telecomitalia.it (A): OK
Jun 24 17:16:06 mail postfix/smtp[12774]: dns_get_answer: type A for mx6.telecomitalia.it
Jun 24 17:16:06 mail postfix/smtp[12774]: lookup mx6.telecomitalia.it type AAAA flags 128
Jun 24 17:16:16 mail postfix/smtp[12774]: dns_query: mx6.telecomitalia.it (AAAA): Host found but no data record of requested type
Jun 24 17:16:16 mail postfix/smtp[12774]: smtp_addr_one: host mx2.telecomitalia.it
Jun 24 17:16:16 mail postfix/smtp[12774]: lookup mx2.telecomitalia.it type A flags 128
Jun 24 17:16:16 mail postfix/smtp[12774]: dns_query: mx2.telecomitalia.it (A): OK
Jun 24 17:16:16 mail postfix/smtp[12774]: dns_get_answer: type A for mx2.telecomitalia.it
Jun 24 17:16:16 mail postfix/smtp[12774]: lookup mx2.telecomitalia.it type AAAA flags 128
Jun 24 17:16:16 mail postfix/smtp[12774]: dns_query: mx2.telecomitalia.it (AAAA): Host found but no data record of requested type
Jun 24 17:16:16 mail postfix/smtp[12774]: smtp_addr_one: host mx3.telecomitalia.it
Jun 24 17:16:16 mail postfix/smtp[12774]: lookup mx3.telecomitalia.it type A flags 128
Jun 24 17:16:16 mail postfix/smtp[12774]: dns_query: mx3.telecomitalia.it (A): OK
Jun 24 17:16:16 mail postfix/smtp[12774]: dns_get_answer: type A for mx3.telecomitalia.it
Jun 24 17:16:16 mail postfix/smtp[12774]: lookup mx3.telecomitalia.it type AAAA flags 128
Jun 24 17:16:16 mail postfix/smtp[12774]: dns_query: mx3.telecomitalia.it (AAAA): Host found but no data record of requested type
Jun 24 17:16:16 mail postfix/smtp[12774]: smtp_addr_one: host mx1.telecomitalia.it
Jun 24 17:16:16 mail postfix/smtp[12774]: lookup mx1.telecomitalia.it type A flags 128
Jun 24 17:16:16 mail postfix/smtp[12774]: dns_query: mx1.telecomitalia.it (A): OK
Jun 24 17:16:16 mail postfix/smtp[12774]: dns_get_answer: type A for mx1.telecomitalia.it
Jun 24 17:16:16 mail postfix/smtp[12774]: lookup mx1.telecomitalia.it type AAAA flags 128
Jun 24 17:16:17 mail postfix/smtp[12774]: dns_query: mx1.telecomitalia.it (AAAA): Host found but no data record of requested type
Jun 24 17:16:17 mail postfix/smtp[12774]: begin telecomitalia.it address list
Jun 24 17:16:17 mail postfix/smtp[12774]: pref  10 host mx4.telecomitalia.it/217.169.121.15
Jun 24 17:16:17 mail postfix/smtp[12774]: pref  10 host mx5.telecomitalia.it/217.169.121.66
Jun 24 17:16:17 mail postfix/smtp[12774]: pref  10 host mx6.telecomitalia.it/217.169.121.66
Jun 24 17:16:17 mail postfix/smtp[12774]: pref  20 host mx2.telecomitalia.it/156.54.233.161
Jun 24 17:16:17 mail postfix/smtp[12774]: pref  20 host mx3.telecomitalia.it/156.54.233.162
Jun 24 17:16:17 mail postfix/smtp[12774]: pref  20 host mx1.telecomitalia.it/156.54.233.160
Jun 24 17:16:17 mail postfix/smtp[12774]: end telecomitalia.it address list
Jun 24 17:16:17 mail postfix/smtp[12774]: smtp_connect_addr: trying: mx6.telecomitalia.it[217.169.121.66] port 25...
Jun 24 17:16:17 mail postfix/smtp[12774]: < mx6.telecomitalia.it[217.169.121.66]:25: 220 mx6.telecomitalia.it  Wed, 24 Jun 2009 17:16:17 +0200
Jun 24 17:16:17 mail postfix/smtp[12774]: > mx6.telecomitalia.it[217.169.121.66]:25: EHLO mail.mydomain.it
Jun 24 17:16:17 mail postfix/smtp[12774]: < mx6.telecomitalia.it[217.169.121.66]:25: 250-mx6.telecomitalia.it Hello [my.ip.addr]
Jun 24 17:16:17 mail postfix/smtp[12774]: < mx6.telecomitalia.it[217.169.121.66]:25: 250-TURN
Jun 24 17:16:17 mail postfix/smtp[12774]: < mx6.telecomitalia.it[217.169.121.66]:25: 250-SIZE 20480000
Jun 24 17:16:17 mail postfix/smtp[12774]: < mx6.telecomitalia.it[217.169.121.66]:25: 250-ETRN
Jun 24 17:16:17 mail postfix/smtp[12774]: < mx6.telecomitalia.it[217.169.121.66]:25: 250-PIPELINING
Jun 24 17:16:17 mail postfix/smtp[12774]: < mx6.telecomitalia.it[217.169.121.66]:25: 250-DSN
Jun 24 17:16:17 mail postfix/smtp[12774]: < mx6.telecomitalia.it[217.169.121.66]:25: 250-ENHANCEDSTATUSCODES
Jun 24 17:16:17 mail postfix/smtp[12774]: < mx6.telecomitalia.it[217.169.121.66]:25: 250-8bitmime
Jun 24 17:16:17 mail postfix/smtp[12774]: < mx6.telecomitalia.it[217.169.121.66]:25: 250-BINARYMIME
Jun 24 17:16:17 mail postfix/smtp[12774]: < mx6.telecomitalia.it[217.169.121.66]:25: 250-CHUNKING
Jun 24 17:16:17 mail postfix/smtp[12774]: < mx6.telecomitalia.it[217.169.121.66]:25: 250-VRFY
Jun 24 17:16:17 mail postfix/smtp[12774]: < mx6.telecomitalia.it[217.169.121.66]:25: 250-X-LINK2STATE
Jun 24 17:16:17 mail postfix/smtp[12774]: < mx6.telecomitalia.it[217.169.121.66]:25: 250-XEXCH50
Jun 24 17:16:17 mail postfix/smtp[12774]: < mx6.telecomitalia.it[217.169.121.66]:25: 250 OK
Jun 24 17:16:17 mail postfix/smtp[12774]: > mx6.telecomitalia.it[217.169.121.66]:25: MAIL FROM:<john.doe@first_virtual_domain.it> SIZE=5826 BODY=7BIT
Jun 24 17:16:17 mail postfix/smtp[12774]: > mx6.telecomitalia.it[217.169.121.66]:25: RCPT TO:<false.user@telecomitalia.it> ORCPT=rfc822;false.user@telecomitalia.it
Jun 24 17:16:17 mail postfix/smtp[12774]: > mx6.telecomitalia.it[217.169.121.66]:25: DATA
Jun 24 17:16:17 mail postfix/smtp[12774]: < mx6.telecomitalia.it[217.169.121.66]:25: 250 2.1.0 john.doe@first_virtual_domain.it....Sender OK
Jun 24 17:16:18 mail postfix/smtp[12774]: < mx6.telecomitalia.it[217.169.121.66]:25: 250 2.1.5 false.user@telecomitalia.it
Jun 24 17:16:18 mail postfix/smtp[12774]: < mx6.telecomitalia.it[217.169.121.66]:25: 354 Start mail input; end with <CRLF>.<CRLF>
Jun 24 17:16:18 mail postfix/smtp[12774]: > mx6.telecomitalia.it[217.169.121.66]:25: .
Jun 24 17:16:18 mail postfix/smtp[12774]: > mx6.telecomitalia.it[217.169.121.66]:25: QUIT
Jun 24 17:16:19 mail postfix/smtp[12774]: < mx6.telecomitalia.it[217.169.121.66]:25: 250 2.6.0  <1F71AE495A4C45979BC8B510A2EC7ECA@MYPC> Queued mail for delivery
Jun 24 17:16:19 mail postfix/smtp[12774]: F37FB98004FC: to=<false.user@telecomitalia.it>, relay=mx6.telecomitalia.it[217.169.121.66]:25, delay=50, delays=0.01/0.02/48/1.8, dsn=2.6.0, status=sent (250 2.6.0  <1F71AE495A4C45979BC8B510A2EC7ECA@MYPC> Queued mail for delivery)

It seems that after parsing all smtp servers from MX records Postfix is able to send the email. I get no errors. But the mail never arrives!!!

falko 25th June 2009 15:56

Quote:

Originally Posted by Rashef (Post 196301)
But the mail never arrives!!!

Maybe it ended up in a spam folder?

Rashef 25th June 2009 16:12

Quote:

Originally Posted by falko (Post 196396)
Maybe it ended up in a spam folder?

Mails are not in their junk folder...
Did you notice something strange in the log?


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