1
vote
1answer
56 views

Posftix mails not arriving to external recipients (closed port)

I have an Ubuntu Server (192.168.1.2) behind a router (192.168.1.1 with static public IP a.b.c.d and domain example.com). Apache works fine and is accessible from the outside under example.com. On ...
-1
votes
1answer
56 views

Postfix + Mailq: Mailbox Full no bounce

I have a mail server and alot of clients. Some of my clients have many email accounts and dont use some of them. So, I have alot of mailboxes full, which receives dozens of emails every day. So, my ...
2
votes
1answer
34 views

Maximum length of MAIL FROM address

When sending out emails with a MAIL FROM address > 81 characters I receive bounce messages from some MTAs: 501 Syntax error - Badly formatted address. (in reply to MAIL FROM command) As soon as ...
-1
votes
1answer
34 views

Postfix record recipient if unable to deliver or bounced

Help would be greatly appreciated. I am not a server admin but I have been tasked with making a means of auto-removing a email recipient from the database containing a table with a list of emails, ...
1
vote
2answers
92 views

If I use postfix for mail relay, so is myhostname / mydestination important?

I use postfix to relay mail to 3rd party SMTP and never sent out email directly, and of course I never receive email. So If I set myhostname / mydestination to sth like fake.mydomain.com, which ...
1
vote
1answer
84 views

SMTPD restrictions

i'm looking for a bit of advice on Postfix restrictions configuration. I'm looking for a balanced configuration which properly rejects spam and unauthorized access retries. Lately, i've been reading ...
0
votes
2answers
331 views

Postfix: bouncing mail (reverse DNS issue)

I have a problem with Postfix. I get this with some email address: to=<mail@domain.tld>, relay=mail.domain.tld[IP_ADDRESS]:25, delay=3, delays=0/0/2.5/0.52, dsn=5.7.1, status=bounced (host ...
1
vote
2answers
107 views

Bounced mails not reaching postfix

I have postfix and dovecot installed on a Centos 6.4 production (www.bw.co.uk) machine. The intent is to send all system and transactional messages and collect bounces. The email id's that resulted in ...
2
votes
1answer
181 views

telnet unable to connect to remote host

I have installed postfix and devcot on one of my live servers to send bulk mail (system messages on sign-up, wrong passwords etc). I use the php_imap function to check bounces and flag those email ...
0
votes
1answer
111 views

Contact sender via Postfix Mailer-Daemon on “Bad recipient address syntax”

I would like Postfix to generate and contact via Mailer-Daemon the sender recipient when the following case occurs Bad recipient address syntax. I've been reading through Postfix docs but haven't ...
0
votes
0answers
371 views

Postfix: reject instead of defer type=MX: Host not found, try again

i'm looking for the postfix directive which lets me immediately reject instead of deferring the following kind of errors: Feb 12 20:03:11 we postfix/smtp[9692]: 5B8CC48DCC: to=, relay=none, ...
0
votes
1answer
109 views

Postfix: Reject reject_unknown_recipient_domain and receive instant email notification

when an email is sent to a non existing domain or recipient, i would like the sender to receive an immediate email from mailer-daemon informing the recipient does not exists. Actually, what happens ...
2
votes
0answers
19 views

“Undelivered Mail Returned to Sender” messages from Google [duplicate]

Some while back I set up a postfix server. I set the MX record for my domain name and sent a test message to one of my addresses on gmail.com. However, as the MX record change was not propagated by ...
1
vote
2answers
161 views

Postfix mailqueue “Mailbox Full”

I have a mail server with postfix, and I want to differenciate the bouncing rules. maximal_queue_lifetime = 12h bounce_queue_lifetime = 12h Ok, its 12h (maybe it should be more). But I want to ...
-1
votes
1answer
295 views

hotmail doesn't accept my emails

I have installed and configure postfix as a mail server in ubuntu 12.04. I can send emails to gmail with no problem but I can't send them to hotmail when i enter in putty dig @ns1glr.name.com ...
1
vote
0answers
82 views

Postfix: Resend 'hard' bounces

I had a number of messages get rejected by the recipient's mail server with a status 550 code due to an IP address blacklist. I've sorted the problem that caused the host to become blacklisted, and ...
0
votes
1answer
191 views

Postfix: mail delivered locally, but I wanted relayhost delivery

I work at example.net :-) and my team's server is named tardis.example.net . Any mail sent to us must first go through our company's internal relay hosts. Although the messages are delivered to our ...
1
vote
1answer
17 views

Postfix doesn't accept pipe

I've tried to configure postfix to execute the script /tmp/test.sh each time the user "bounce" receives a mail. My /etc/postfix/aliases: ... bounce: "| /tmp/test.sh" ... If I send an mail to that ...
3
votes
1answer
88 views

Silently drop OUTGOING mails to us.er.n.a.me@gmail.com (more than 3 dots in username part)

With postfix-2.6.6-2.2.el6_1.x86_64 on CentOS 6.4 is there please a way to inspect OUTGOING mails and silently drop them (i.e. do not send them) if the recipient looks like us.er.n.a.me@gmail.com ...
0
votes
1answer
118 views

can postfix use a backup relay in response to a 5xx error code [closed]

I'm trying to configure my postfix (2.9.6) mail server to initially try deliver messages directly to the recipient MX, then fall back to relaying through my ISP's mail server if it recieves a 5xx ...
0
votes
1answer
636 views

Postfix with relayhost - relay access denied for bounces

I have set up a Postfix Mailserver, outgoing mail is being sent through a smarthost/relayhost which requires authentification. That works great, internal clients can send to foreign recipients though ...
0
votes
0answers
40 views

Postfix mailserver 550 bogus response

So I have a mail server setup on my Amazon EC2 Debian instance and it's been fine for months however recently I received this response from a customer: <user@customer.co.uk>: host ...
0
votes
1answer
1k views

Remote host said: 550 5.7.1 message content rejected

A sender from France is trying to send an email to us. Unfortunately his email is being rejected with the message below. I suspect there are some weird characters in the mail content but how can I ...
0
votes
1answer
1k views

postfix relaying all mail through office365 problems

This is a rather long question with a long list of things tried and travails so please bear with me. The summary is this. I am able to relay email from ubuntu through office365 using postfix; the ...
0
votes
4answers
1k views

Postfix mails bouncing for no reason

I have a Postfix server setup which works fine most of the time but between 100 - 200 mails gets deferred every day with the following errors: status=deferred (lost connection with ...
0
votes
1answer
110 views

Postfix: don't bounce for remote rejects

I'm having a problem with sending bounces to spammers when a remote "trusted" smtp server rejects a mail. My server manages mail for company1.com that has a virtual alias support@company1.com that ...
0
votes
1answer
170 views

Postfix regex for smtpd_command_filter

Some of my users are using Gmail to send mail to our domain (The mail server for which is hosted on a CentOS 5 machine with postfix). Sometimes, but not all the time, when they do, they get a ...
0
votes
2answers
240 views

postfix bounce configuration

What I have is: Windows server generating emails with own app and sending them to relay server (2) - this works fine Relay server that sends emails received from (1) - CentOS - working fine What I ...
0
votes
1answer
333 views

After changing SMTP port from 25 to 587 I can send, but now I don't receive emails

I configured Postfix, after a time I discovered I am blocked from sending emails because my network is on a blacklist (it's a dynamic IP). So, sometimes Outlook does not connect to send (still gets ...
0
votes
3answers
363 views

Postfix won't reject undeliverable messages

I'm not shure about the wording. Maybe bouncing is the right word. Problem is, that a local user did send a message to a non-existing domain. Now I expected that postfix will send the message back to ...
0
votes
1answer
77 views

storing bounce notifications in database

I want to get the error code and the bounced mail when a bounce occurs. I have added content filter below bounces in master.cf and created a piping. I created a transport map in main.cf and I ...
2
votes
1answer
930 views

Having trouble interpreting mail log DNS errors

I have a postfix mail server on Debian. A client of mine just informed me that they were unable to send an email to me and it appears that there is a problem with their mail server. I would like to ...
-1
votes
1answer
107 views

Send one invalid email response to sender

I discovered that my postfix/dovecot configuration isn't rejecting emails. If a person sends an email to an invalid email-address, it just drops it. I am fine with this behavior since I think it ...
1
vote
1answer
5k views

How to disable “sender non-delivery notification” in postfix?

I want postfix to stop sending non-delivery notifications to my local account, here is example from my log 17:47:08 A727B62C6F61: message-id=<20121124174708.A727B62C6F61@mail.***********> ...
0
votes
4answers
235 views

Is there a way to get Postfix to both forward an e-mail *and* reject it via recipient_address_rejected

In postfix, I'd like a way to deal with e-mail accounts that are no longer active by having postfix send the standard "Recipient address rejected" type message, but still forwarding the e-mail to ...
2
votes
1answer
2k views

Postfix deferred email - How to expire so bounce-back email gets sent back

My hosted email server is "Refusing to talk : 550" with my postfix server. Gmail, Yahoo, Hotmail all accepts them fine. All of sudden hosted email provider decided not accept email from my server. I ...
1
vote
1answer
270 views

if I define `my_domain`, postfix does not expand mail aliases

I have postfix v2.6.6 running on CentOS 6.3, hostname priest.ocsl.local (private, internal domain) with a number of aliases supportpeople: user1@ocsl.co.uk, user2@ocsl.co.uk, user3@ocsl.co.uk ...
1
vote
3answers
2k views

Redirecting wildcard emails to one email with postfix

I'm creating a bounce email system where emails can reply to messages on my site. However when the emails are sent to the user containing the previous message, the Reply-To field contains an email ...
2
votes
1answer
8k views

451 #4.1.8 Domain of sender address does not resolve

When sending out email to xxx@terremark.com through my own SMTP server (mail.sarit.be), the receiving mail server replies with: 451 #4.1.8 Domain of sender address <xxx@sarit.be> does not ...
0
votes
2answers
455 views

Postfix bounce local delivery with source address from orig_to

I am creating a python script to deliver local mail using various means. The problem is this: This script has to accept multiple virtual domains defined in /etc/postfix/virtual The script does the ...
2
votes
1answer
7k views

Domain of sender address does not resolve (in reply to MAIL FROM command)

When sending out emails with postfix I sometimes get this error: 451 #4.1.8 Domain of sender address <user@mydomain.tld> does not resolve (in reply to MAIL FROM command) The domain ...
2
votes
1answer
168 views

Drop all emails that aren't forwarded by postfix

I'm setting up a forwarding only email server. I want to apply some static forwarding rules to all incoming emails and bounce all other incoming emails (and not store them locally). ...
2
votes
2answers
2k views

Setting bounce address using postfix

I want to set the bounce address or return path address to a particular email address(say someemail@example.com). Such that whenever a mail bounces it will send a reply to someemail@example.com. How ...
1
vote
2answers
927 views

Ubuntu Linux - Postfix is rejecting all email coming from non-localhost

I am not sure exactly what is going wrong here, but my server (Postfix?) seems to be rejecting all external emails going to the server mydomain.info. Here is the bounce-back message I am receving, ...
5
votes
1answer
2k views

How should I configure postfix to avoid sent emails bouncing because of “Invalid HELO name”

Some mail sent from sites on my server bounce back with the following mail.log message Nov 26 17:27:53 blogu postfix/smtp[16858]: C4DD22908EC0: to=, relay=rejecting-domain.ro[rejecting-ip]:25, ...
1
vote
0answers
182 views

Why did postfix deliver a bounce notification to a local spool file, when delivery to this user has been disabled?

My postfix configuration allows mail via several local_recipient_maps. However, delivery to "proxy:unix:passwd.byname" is specifically disabled. This normally prevents delivery to local unix users: $ ...
1
vote
2answers
1k views

Postfix - don't generate “unknown user” bounces if message is Spam

We receive a a lot of spam addressed to (random) non-existing users. This causes postfix to generate "unknown user" bounces to the fake sender. As a workaround I use a catch-all to redirect any mail ...
-1
votes
1answer
2k views

How configure Zimbra to bounce mails over a given size limit?

How to configure Zimbra to bounce/notify email to sender due to over attach size from external mails like Gmail, Yahoo, etc.. I am using Zimbra open source edition. Undelivered mails are not bouncing ...
0
votes
1answer
462 views

Stop Postfix revealing final email forwarding address in bounce messages

I have a Postfix server that receives mail for virtual aliases and forwards them to the real destination addresses. When the final mail server returns an error the bounce message returned to the ...
0
votes
2answers
635 views

Stopping spam-related bounced emails

One of my e-mail customers is currently on the receiving end of massive amounts of delivery failure notices as a "Nigerian scammer" seems to be using her address as its MAIL FROM field. A lot of it ...