The server configuration of email, including POP3, SMTP, IMAP, and popular server software packages that control email.

learn more… | top users | synonyms (2)

-1
votes
3answers
106 views

Server being used to send spam mail. How do I investigate?

Problem I think my server is being used to send spam with sendmail, I'm getting a lot of mail being queued up that I don't recognize and my mail.log and syslog are getting huge. I've shutdown ...
0
votes
1answer
48 views

Allow sender spoofing for specific user on Postfix server with LDAP

So I have a Postfix server that authenticates users against an LDAP directory. This works great so far, but one of the mail adresses should be allowed to set another sender address. All users on ...
0
votes
1answer
55 views

Dovecot: no auth attempts in 0 secs (IMAP protocol)

I'm having a lot of problems configuring dovecot ony vps. I'm already able to send email using port 110 and to receive email using port 25, but I can't connect using port 993 and 995. I'm using ...
1
vote
1answer
77 views

t-online.de blacklist “host refused to talk to me” (BL)

I got following error message for several days, as my server tried to send a message to an emailadress at t-online.de: host mx02.t-online.de[194.25.134.9] refused to talk to me: 554 IP=xx.xx.xx.xx - ...
0
votes
0answers
37 views

sSMTP Configuration issue for Zoho mail

I was using following configuration to send from Gmail from sSMTP from Ubuntu using PHP # # Config file for sSMTP sendmail # # The person who gets all mail for userids < 1000 # Make this empty to ...
0
votes
0answers
40 views

Tell postfix to merge three Authentication-Results:-Lines into one?

I am running a postfix mta with debian wheezy. I am using postfix-policyd-spf-python, openkdim and opendmarc. When receiving e-mails from google (google apps with own domain) for example, the header ...
0
votes
0answers
90 views

Postfix - suspend domain from which deferred status was received?

Is there a possibility to make Postfix stop trying (for a period of time) to send emails to a domain from which it received a deferred response? Currently my Postfix goes through each address in the ...
0
votes
0answers
33 views

send outgoing email via postfix from mail client [duplicate]

I have installed postfix on my ubuntu that is hosted on digitalocean. What I want to do is. With my smtp server setup, I want to use it to send mail from my email client. I don't need to receive, I ...
0
votes
0answers
19 views

Postfix does not offer authentication on submission port when it is enabled

I'm having an odd (to me at least) problem with a new Postfix install. I'm using Postfix with Dovecot, and the IMAP from Dovecot is working just great, but when clients try to send mail to the ...
0
votes
2answers
771 views

My server keeps sending emails to hostmaster@xxx.com

When I type mailq on my server, I get: BB523653A62 4025 Wed Jun 4 10:40:07 MAILER-DAEMON (delivery temporarily suspended: host p3smtpout.secureserver.net[208.109.80.54] refused to talk to me: ...
0
votes
1answer
28 views

Exchange 2007 issue internet receive connector

I have issue with yahoo.co.uk if I send a mail from within the yahoo webconsole the mail arrives in my inbox on the exchange server If I send mail from Iphone configure to send via mail box ...
1
vote
1answer
32 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 ...
0
votes
0answers
38 views

Centos/Postfix able to send mail but not receive it

I have set up postfix and used the mail command to test and an email was successfully sent and delivered. The email arrived in my yahoo inbox BUT the sender also recieved an email in the Maildir ...
1
vote
0answers
34 views

Exchange on SBS2003 not receiving mail, but sending via telnet works

Last week we had a problem on our SBS2003 server where our external connection dropped out and I was only able to restore it by running netsh winsock reset catalog and netsh int ip reset. Thinking ...
2
votes
1answer
63 views

How to setup a daily report of the top e-mail senders in Exchange 2010

We have had issues with compromised Exchange accounts sending a large amount of unsolicited e-mails out. We have mitigated this by using a cloud e-mail gateway that does a better job in detecting ...
0
votes
0answers
44 views

send outbound postfix email to other server

I have more than 18 mail servers, running postfix. All of them have around 10,000 customers with more than 25,000 email addresses. as we didnt applied password policy before (and cannot apply it now ...
-3
votes
4answers
81 views

Beginner server local installation [duplicate]

Here's the thing I own a small business and currently my emails are being managed by some regular hosting using cpanel and that I bought a small server and installed windows server and exchange Can ...
-2
votes
1answer
66 views

How to find the source of outgoing SPAM emails on my Server [closed]

Hello this is my first time here. I do know a little about linux but I can't seem to find out the source of tons of SPAM emails being sent out on my server. Here is a small portion of the QMAIL ...
0
votes
1answer
45 views

Disable ClamAV for Amavis

I have a Postfix mail server, using Amavis and Spamassassin to check for unwanted e-mails. I have removed ClamAV because it'd basically freeze the whole server every time someone received an e-mail, ...
1
vote
0answers
42 views

When does Postfix not perform lookups in virtual_alias_maps?

I'm having a real pickle of a problem: I have a Postfix 2.6.6 / CentOS 6 server that's set up to forward mail from specific aliases to specific destinations. This is done through a mysql ...
0
votes
0answers
24 views

How can I limit the amount of messages SendMail will recieve in a single incoming connection?

Is there a way to limit how many messages can be received by SendMail in a given SMTP session? I have a SendMail server and an upstream application server is trying to send dozens (potentially ...
0
votes
0answers
15 views

Email marked as spam, but I am not listed on blacklists [duplicate]

I have a problem with sending emails from my server. The problem is that when I send mails to external addresses such as gmail, hotmail, yahoo, etc, sometimes come to spam. For example, send a email ...
0
votes
0answers
31 views

How to prevent emails from my domain through mailing lists to be rejected due to DMARC

I operate my own mail server at speedofsoundgaming.com and mwtd.net. I recently added a DMARC record to my domain to help prevent spam, and once seeing that things seemed to be working, upped the ...
1
vote
1answer
33 views

Migrating email host from local MS Exchange to 3rd-party host

This may be a simple question, but so far I've had trouble finding any help that corresponds well to my specific situation. The very small business I work for is planning on "phasing out" the local ...
1
vote
0answers
32 views

Some emails don't arrive

Yesterday, somehow a DNS Zone File got removed from Cloudflare. So after re-editing the file everything seemed okay. Now there's the problem that some emails don't arrive in the inbox. Strange thing ...
1
vote
1answer
35 views

Exchange 2010: Send emails via STMP with custom From address to outside the domain

The requirement(s): (1) Connect to Exchange via STMP and (2) basic authentication and send emails with a (3) custom From address to (4) recipients outside the domain. I was able to get (1) - (3) ...
0
votes
0answers
14 views

global autoresponder google apps

We just migrate our main domain to a new one. (@olddomain.com -> @newdomain.com) Now we want that people who send emails to any account in @olddomain.com, receive automatically a message like "the ...
1
vote
0answers
63 views

Posftfix - MTA during fwd-connect Negative greeting

I have problem with postfix on Debian Squeezy (Yes. Squeezy). I can't send email, idk why. My postqueue: root@mx-2:~# postqueue -p -Queue ID- --Size-- ----Arrival Time---- -Sender/Recipient------- ...
1
vote
1answer
39 views

Using Microsoft Exchange Online to host emails but still allow piped emails in cPanel

I want to use Microsoft Exchange Online to host my emails. I understand this involves changing MX records to point to Microsoft's servers. My issue is that in cPanel I have some piped email address ...
0
votes
0answers
11 views

SMESERVER: Mail not receiving, 550 v=spf1 a -all (suddenly appeared 5/21) [duplicate]

My situation is exactly the same - SMEserver 7.51 (yes I know I need to upgrade) been running for years and I get the same spf error message back just starting Wednesday afternoon(5/21). I also tried ...
1
vote
0answers
19 views

Email messages not being designated [closed]

All my emails are not being designated. The SPF is neutral or none. I'm using earthlink. I get blocked on some Google groups. How to circumvent this issue.
0
votes
1answer
114 views

SMESERVER: Mail not receiving, 550 v=spf1 a -all

SMESERVER install has been working find for an age then this morning "The error that the other server returned was: 550 v=spf1 a -all", can anyone 'point' me in the right direction to resolving this ...
0
votes
1answer
136 views

Sendmail: DSN: Service unavailable

I've been having trouble getting my server to send email and I haven't for the life of me figured out how to fix it. If anyone could give me some simple pointers, that would be muchly appreciated! ...
3
votes
1answer
200 views

A record required for MX record?

Previously our domain, let's call it ourdomain.com, pointed to an IP address (our web host). In addition, we use Office 365 to handle our domain email accounts. DNS records: ourdomain.com A ...
0
votes
1answer
158 views

DNS Zone Record: How to set up MX Record correctly? [closed]

I've been search for this for quite a while, and tried many different examples for weeks (because I usually have to wait a couple hours for the DNS change). Nothing made my mail() in PHP as well as my ...
1
vote
1answer
80 views

User login URL for newkly installed Zimbra mail server

I have managed to install Zimbra 8.0.7 on my Ubuntu 12.0.4 LTS server (I had to rebuild my machine and reinstall the OS, so that no other servers other than Zimbra are running - how to reinstall ...
0
votes
0answers
21 views

SPF-entry to allow outgoing mails from my webserver and GMail only [duplicate]

At the IP-address 123.123.123.123 I host several virtual hosts with Apache and CentOS: my-drupal-1.com my-drupal-2.com my-wordpress-1.com my-wordpress-2.com My current DNS entry is: $TTL 86400 @ ...
3
votes
1answer
66 views

Configure Exchange to ignore requests for read receipts on certain mailbox

We have an Exchange (2010) mailbox that is automatically monitored by a windows service, this service connects to the mailbox periodically using Exchange Web Services 1.1 and imports the emails into ...
-2
votes
1answer
302 views

How to configure synology NAS for SMTP server [closed]

first of all I have to admit that I'm a beginner in this topic. In fact this is my first post. I have a synology 213J that I want to configure as SMTP server. I discovered that I needed a domain in ...
0
votes
3answers
74 views

Move mail server to a new server with no downtime

We have a server that currently acts as a web, database and mail server. We would like to move mail to its own dedicated server. So: The address for the mail server is mail.example.com. It has A ...
0
votes
1answer
55 views

postfix just installed on ubuntu, but mail() not working in php

I have a new server. Just installed Postfix (apt-get install mailutils), and configured postfix as "Internet site". Works fine when I'm logged in as regular user on the command prompt and use "mail ...
2
votes
1answer
67 views

Moving X400 address to user's new mailbox, internal NDR

We have a user who has had access to his old mailbox restricted by management. However, they want them to continue to receive mail in a new mailbox using the same SMTP address. The situation is, the ...
0
votes
2answers
49 views

Two Exim servers and redirects

it is a bit fuzzy thing I try to solve so I need to ask you for a help. Our users are divided between two big buildings, that are far from each other, so we set up two independent mail servers so ...
0
votes
1answer
25 views

How to automate sending warning email if USB backup drives are not rotated frequently enough?

Our off-site backup system relies on a staff member alternating which USB drive is connected to the file server each week. Whichever drive is connected then synchronizes with the data partition on ...
1
vote
1answer
19 views

Disabling network access for a group of users but allowing smtp only

We have an environment where our users ssh into the system and their shell is set to simply launch Mutt on their $HOME/Maildir. We want to restrict our users to only be able to send/receive mail. We ...
2
votes
1answer
70 views

nginx: understanding the purpose of auth_http (IMAP proxy)

I would like to send IMAP client requests to an IMAP back-end via an nginx proxy. According to the the mail_auth_http module, a directive auth_http has to be used in order to authenticate the clients. ...
-2
votes
1answer
302 views

Mail delivery failed for a message I didn't send [duplicate]

I have started to receive emails with the subject: "Mail delivery failed: returning message to sender" for emails I haven't sent. I host my own mail server at my domain matos-sorge.com (a linode) and ...
0
votes
0answers
30 views

Forward incoming email traffic

I have two CentOS servers - one for email and one for web hosting. One domain, which we do not control, has the MX record incorrectly pointing to the web host. What iptables config is needed to ...
1
vote
1answer
87 views

“Postfix SMTP server: errors from *” repeated automatic response

I'm attempting to setup a mail server with Postfix and Dovecot. It's not really working all that well, but there's something more urgent I'd like to get fixed first. I sent a few test e-mail ...
-1
votes
1answer
17 views

Postfix with Clamd

I've been setting up my own VPS for an e-commerce, as well as a mail server. In order to setup the e-commerce, mysql and apache is running. In order to setup the mail server, I've installed postfix. ...