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mail forwarding loop

F

Flamenetworks

Basic Pleskian
Hello Dears,

PRODUCT

Parallels Plesk

VERSION

11.5.30 Debian 7.0 115140407.17

MICROUPDATE

#44

OPERATING SYSTEM

Debian 7.5

ARCHITECTURE

x86_64

PROBLEM DESCRIPTION

Just configured on mailbox pippo@domain.com a forwarder to pluto@domain.com, but e-mail forwarder produces loop:

May 9 11:55:38 vps postfix/pickup[31618]: 81208123209: uid=30 from=<mailbox@gmail.com>
May 9 11:55:38 vps postfix/cleanup[529]: 81208123209: message-id=<CACpaKgRN6mdhcKuZNTDnjNiPzm7FOqmH8o-KMFSRkv=OD2SRSQ@mail.gmail.com>
May 9 11:55:38 vps postfix/qmgr[12966]: 81208123209: from=<mailbox@gmail.com>, size=2219, nrcpt=1 (queue active)
May 9 11:55:38 vps postfix/pipe[533]: 81208123209: to=<pluto@domain.com>, relay=plesk_virtual, delay=0.01, delays=0.01/0/0/0.01, dsn=5.4.6, status=bounced (mail forwarding loop for pluto@domain.com)
May 9 11:55:38 vps postfix/bounce[548]: 81208123209: sender non-delivery notification: 8463F12320A
May 9 11:55:38 vps postfix/qmgr[12966]: 81208123209: removed


STEPS TO REPRODUCE

Configure a simple e-mail forwarder from a mailbox to another e-mail address

ACTUAL RESULT

E-mail loop: the message is not forwarded to pluto@domain.com

EXPECTED RESULT

E-mail to be forwarded to pluto@domain.com

ANY ADDITIONAL INFORMATION

N/A

Thank you very much for any information/tip! :)
 
Hi Flamenetworks,

am I right, that you have the domain domain.com with two mailboxes enabled: 1. pluto, 2. pippo?
You enabled a forwarder from pippo to pluto mailbox?

Can you check the /var/qmail/mailnames/domain.com if the mailboxes are created successfully?
Further more it sounds like a loop, produced by the mailserver. Did you already ran mchk?

For further assistance, just let me know.
 
Hi,

thanks for your reply.

Yes, you're right: both pippo@domain.com and pluto@domain.com are mailboxes enabled on domain.com. Also I've created a forwarder from pippo@domain.com to pluto@domain.com

In /var/qmail/mailnames/domain.com/ I see both "pippo" and "pluto" directories. Also: Webmail access on both mailboxes works fine, this means mailboxes are ok.

I haven't used mchk, should I?
 
Hi,

this is the bounce message:

Reporting-MTA: dns; vps.domain.com
X-Postfix-Queue-ID: 1F1E2122F33
X-Postfix-Sender: rfc822; mailbox@flamenetworks.com
Arrival-Date: Tue, 20 May 2014 17:20:42 +0200 (CEST)

Final-Recipient: rfc822; pippo@domain.com
Action: failed
Status: 5.4.6
Diagnostic-Code: X-Postfix; mail forwarding loop for pippo@domain.com

syslog:

May 20 17:20:41 vps postfix/smtpd[28264]: D8806122F31: client=mailserver.flamenetworks.com[x.x.x.x]
May 20 17:20:41 vps postfix/cleanup[28268]: D8806122F31: message-id=<someID@flamenetworks.com>
May 20 17:20:41 vps postfix/qmgr[12966]: D8806122F31: from=<mailbox@flamenetworks.com>, size=23436, nrcpt=1 (queue active)
May 20 17:20:42 vps postfix/pipe[28272]: D8806122F31: to=<pippo@domain.com>, relay=plesk_virtual, delay=0.17, delays=0.08/0/0/0.09, dsn=2.0.0, status=sent (delivered via plesk_virtual service)
May 20 17:20:42 vps postfix/qmgr[12966]: D8806122F31: removed

This is the forwarder:

May 20 17:20:42 vps postfix/pickup[26191]: 08AD1122F34: uid=30 from=<mailbox@flamenetworks.com>
May 20 17:20:42 vps postfix/cleanup[28268]: 08AD1122F34: message-id=someID@flamenetworks.com>
May 20 17:20:42 vps postfix/qmgr[12966]: 08AD1122F34: from=<mailbox@flamenetworks.com>, size=23659, nrcpt=1 (queue active)
May 20 17:20:42 vps postfix/pipe[28272]: 08AD1122F34: to=<pluto@domain.com>, relay=plesk_virtual, delay=0.09, delays=0.01/0/0/0.09, dsn=2.0.0, status=sent (delivered via plesk_virtual service)
May 20 17:20:42 vps postfix/qmgr[12966]: 08AD1122F34: removed

May 20 17:20:42 vps postfix/pickup[26191]: 1F1E2122F33: uid=30 from=<mailbox@flamenetworks.com>
May 20 17:20:42 vps postfix/cleanup[28268]: 1F1E2122F33: message-id=<someID@flamenetworks.com>
May 20 17:20:42 vps postfix/qmgr[12966]: 1F1E2122F33: from=<mailbox@flamenetworks.com>, size=23865, nrcpt=1 (queue active)
May 20 17:20:42 vps postfix/pipe[28272]: 1F1E2122F33: to=<pippo@domain.com>, relay=plesk_virtual, delay=0.04, delays=0.01/0/0/0.03, dsn=5.4.6, status=bounced (mail forwarding loop for pippo@domain.com)
May 20 17:20:42 vps postfix/bounce[28308]: 1F1E2122F33: sender non-delivery notification: 2814A122F34
May 20 17:20:42 vps postfix/qmgr[12966]: 1F1E2122F33: removed

Non-delivery message:

May 20 17:20:42 vps postfix/cleanup[28268]: 2814A122F34: message-id=<someID@vps.domain.com>
May 20 17:20:42 vps postfix/qmgr[12966]: 2814A122F34: from=<>, size=25638, nrcpt=1 (queue active)
May 20 17:20:42 vps postfix/bounce[28308]: 1F1E2122F33: sender non-delivery notification: 2814A122F34
May 20 17:20:42 vps postfix/smtp[28285]: 2814A122F34: to=<mailbox@flamenetworks.com>, relay=server.flamenetworks.com[x.x.x.x]:25, delay=0.26, delays=0.01/0/0.14/0.1, dsn=2.0.0, status=sent (250 2.0.0 Ok: queued as BA0D4AD525)
May 20 17:20:42 vps postfix/qmgr[12966]: 2814A122F34: removed
 
How did you configure your forwarding? Obviously, you checked that pluto has no forwarding, but did this domain, or MX ever point to a different server that might have extra forwarding? Have you tested with a different account to forward to pluto to see if it's domain wide?
 
Hi flamenetworks,

it seems in fact that there is a redirect through 2 or more servers. You can provide me via PN the informations and I will try to get being solved your issue asap.
 
Hi,

currently via Plesk Panel there's the following setup:

pippo@domain.com (mailbox) forward to pluto@domain.com (mailbox)
pluto@domain.com (mailbox) forward to pippo@domain.com (mailbox)

The MX is on localhost, the same system of both mailboxes.
Maybe the priority of the MX, set to 0, is the problem? I don't think so, but I won't hide any information for troubleshooting.
 
Flamenetworks said:
Hi,

currently via Plesk Panel there's the following setup:

pippo@domain.com (mailbox) forward to pluto@domain.com (mailbox)
pluto@domain.com (mailbox) forward to pippo@domain.com (mailbox)

The MX is on localhost, the same system of both mailboxes.
Maybe the priority of the MX, set to 0, is the problem? I don't think so, but I won't hide any information for troubleshooting.
Click to expand...

Dear flamenetworks,

you just posted the reason by yourself. It is a loop, because you are forwarding both mailboxes together. This won't work. You'll have to delete one forward entry.
 
Hi,

I had the same doubt, but customer just told "on other system, the same forwarding works fine"
That's why I reported this issue on the Forum.

I'm a little confused... :)
 
Well there is the option of using an account with a mailbox and adding forwarding so both accounts have a copy if one is emailed, or if you want both to receive email for each other you can create an email alias, but that my or may not be what you want.
 
HMoellendorf87 said:
Hi Flamenetworks,

it can't work, so you have to disable one forward and you will be finished.
Sorry for no other solution.
Click to expand...

Hi, I'm the customer with that problem. It is quite obvious that a similar configuration generates a loop. On the other side I think this kind of need can be common and I can assure you all it works perfectly on a cpanel host, without any special configuration. I suppose that the system in this case, simply check the original destination and it prevents the loop not allowing to forward back the message.
Here below some snapshots of cpanel configuration:

cpanel_forwarders.jpg
cpanel_pippo_trace.jpg
cpanel_pluto_trace.jpg

Really is it not possible to do a similar configuration with Plesk? I migrated from Cpanel to Plesk recently but I was supposing to be able to replicate everything and manage better my system but maybe I was wrong.

Regards,

md
 
madimar said:
Hi, I'm the customer with that problem. It is quite obvious that a similar configuration generates a loop. On the other side I think this kind of need can be common and I can assure you all it works perfectly on a cpanel host, without any special configuration. I suppose that the system in this case, simply check the original destination and it prevents the loop not allowing to forward back the message.
Here below some snapshots of cpanel configuration:

View attachment 8335
View attachment 8336
View attachment 8337

Really is it not possible to do a similar configuration with Plesk? I migrated from Cpanel to Plesk recently but I was supposing to be able to replicate everything and manage better my system but maybe I was wrong.

Regards,

md
Click to expand...

I am managing several servers with both plesk and cpanel, and I can tell you they are both good and bad, and I don't prefer one over the other.
They can speed some aspects of administration up, at the cost of their quirks, which aren't apparent at first.
Just my opinion.
 
Plesk has no interface to Maildir delivery, but it's super-easy to set up manually. You'll use the .qmail file, located above your Maildir directory. Here's mine:
/mail/mailnames/<domain>/<account>/.qmail
/mail/mailnames/<domain>/<account>/Maildir/

The .qmail file has a bunch of options: http://qmail.org/man/man5/dot-qmail.html
It can forward e-mail, which is another way to create the same mail forwarding loop problem.
It can also run a shell command.
It can also append to an mbox.
It can also deposit into a Maildir -- that's what we want here:

[ /mail/mailnames/<domain>/joe/.qmail ]
/mail/mailnames/<domain>/jill/Maildir/

[ /mail/mailnames/<domain>/jill/.qmail ]
/mail/mailnames/<domain>/joe/Maildir/

A few funny things:

First, apparently this just copies the file into the other Maildir. So obviously, since it hasn't been re-routed through e-mail, headers don't change as they otherwise would.

Second, plesk also uses this file. When you set up normal forwarding in plesk, it writes to this file -- either to add or to remove your forward. But plesk avoids changing anything else in the file. So this remains reliable.
So, there you go. Finally, after all these years, Joe and Jill can both receive incoming e-mails -- since they are equal business partners, yay!
 
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