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

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130 views

SPF records when sending multi-domain emails from one host

We have a CMS system in which multiple customers run their websites from a single virtual machine. Pages generated by the CMS allow forms to be filled in, which trigger emails to be sent. I am having ...
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0answers
41 views

Exim4 can not send mails via mail client

I'm using Exim4 as my smtp server, in my case, I can send e-mails to any mail accounts from my smtp server, but when I tried to use Thunderbird to send mails, it shows the following error. Sending of ...
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1answer
41 views

change Domain MX

I have a windows server and I set my domain name servers to this server. now I want send email from another server, really my web application and mail server aren't on a same server. the mail server ...
1
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1answer
218 views

com.sun.mail.iap.protocolexception no login methods supported

A JavaMail app and dovecot/postfix/mutt are running on the same CentOS 7 physical serverbox. This JavaMail app was able to reliably import emails via IMAP using the same exact code until some changes ...
1
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1answer
183 views

postfix | sender_bcc_maps for specific emails (with attach)

How, if possible, copy all incoming mail with attachments to mybackup@example.net If I use sender_bcc_map = type:table - all mails will be copied, without attachments too. I do not need that, I just ...
3
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0answers
357 views

Why Outlook, Hotmail and Live return 250 Mail queued for delivery, but they never deliver it?

Ok, i've been seeing this the last week, tought it could be gone in a few days by itself, since i wasn't blacklisted and my DNS entries are all ok, but when i try to send e-mails to some user at ...
1
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1answer
183 views

How to change mailx?

I am having a problem in my VMs. I used the same template (Debian 7min) in OpenVZ, but for whatever reason those two are using a different mailx. I have a small script which I use to send ...
6
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1answer
1k views

amavis cronjob throwing an error out of nowhere

Can someone explain why amavis cronjob is suddenly trowing the following error? Cron <amavis@bee> test -e /usr/sbin/amavisd-new-cronjob && /usr/sbin/amavisd-new-cronjob sa-sync rules: ...
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1answer
42 views

Email Virus initiating a DOS Attack [duplicate]

I have a VPS that keeps getting shut down because of excessive inbound or outbound traffic. I thought I had a virus on my server and with it shut down so was my email server. So I got a new VPS ...
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1answer
112 views

How can I avoid being classified as spammer when I forward mail to a gmail account? [duplicate]

Update: The link pointed to by the "duplicate" initially didn't seem like the same problem to me, because the post talked about blacklisted "domains" not blacklisted "IP addresses." However the main ...
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2answers
102 views

Postfix - How to prevent external clients from using my server as a relay? [closed]

I have a postfix server installed on Ubuntu 14.04. A PHP script running on the machine uses it to send outgoing email. Additionally, I use postfix to receive mail sent to a local account, which is ...
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2answers
282 views

Missing /var/log/mail.log (after deleting it) - How do I recreate it?

To clear the mail log I deleted /var/log/mail.log and /var/log/mail.err. Now it seems like I've broken something as the files are not recreated as I interact with mail: kidmose@radagast:~$ echo ...
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1answer
48 views

Need looping Powershell script to email me when site has error message [closed]

Running 08 windows server on a VM We need to be notified by email or by other means whenever the site is either 404 or goes to maintenance page. Therefore, we need the script to be constantly ...
0
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1answer
74 views

DKIM signing key

when I create DKIM key like this: sudo opendkim-genkey -s mail -d example.com -s specifies the selector and -d the domain, this command will create two files, mail.private is our private key ...
1
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1answer
76 views

mail command : does content-filter in postfix works?

I use Postfix in my machine (linux). When i send a mail to a local user with telnet localhost 25 in command line, my mail is parsed by a content-filter (for example: spamassassin) => no problem. But ...
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0answers
51 views

What is inserting “/*SC*/” and “/*EC*/” into HTML email comments?

Something is inserting the strings "/*SC*/" and "/*EC*/" into the HTML comments within emails received by our corporate email system: We use MS Exchange at multiple locations, but this is only ...
0
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2answers
66 views

One email address recognized as spam [duplicate]

Emails send from some of the addresses in one domain are marked as spam by multiple email clients. Since just few addresses within the domain are marked as spam, I do not think it is a domain problem, ...
2
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1answer
153 views

make Postfix to bcc mail twice

I am running a Postfix mail-server, to scan mails I forward them to amavis, after the scanning amavis forward the mail to ciphermail (a program that automatically de- and encrypts emails). Ciphermail ...
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0answers
17 views

Mailings to specific email provider causing popstate corruption?

We send out a weekly mailing to several thousand subscribers using an old version of Lyris ListManager, and have done so for years without incident. Every month or so starting about a year ago, two ...
0
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1answer
507 views

Postfix: As a smarthost, how can I limit incoming mail to sender domain and sender IP?

I'm running a Postfix+Dovecot service on Centos 7 with a few unrelated virtual domains. This same Postfix server is also set as a smarthost (relay) for IP 192.0.2.2 and 203.0.113.2. Right now, ...
2
votes
2answers
168 views

Forward email to other servers if the recipient doesn't exist in alias map

This is the first time I am starting to write a more complex postfix as I hate setting up mail settings without knowing what to do. But right now I am required to do. Here the setting: For internal ...
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votes
2answers
30 views

Can I use SRV to receive mail on port 2525 ? How must I configure it in my DNS? [duplicate]

Is it possible to use a SRV rule on my DNS to receive mail on port 2525 instead of port 25 ? If it is possible how can I setup this rule correctly ?
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1answer
144 views

Postfix lookup failure: works from localhost, not on other nodes in LAN

I am getting temporary lookup failure for the recipient address when trying to send email using Postfix and Gmail from a machine other than the host, on the same network. It works just fine when ...
0
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1answer
350 views

Postfix / Dovecot not receiving e-mails in Ubuntu 14.04

I've just setup a VPS with Ubuntu 14.04 at Linode. I have installed Postfix, Dovecot & SquirrelMail to handle E-mail. I am able to send e-mails to other accounts (GMail & Yahoo!) but when I ...
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votes
1answer
47 views

How to set up email forward via DNS

We currently have old_domain.com as the primary domain in google mail and new_domain.com as an alias. We want to change new_domain.com to the primary domain. Unfortunately google has a 24 hour lock on ...
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0answers
24 views

Performance: Generating up to 2000 rows and email deliveries [closed]

I guess this belongs here better than in StackOverflow. I have the following scenario: Small database with users ( around 2000 only ) information, they participated in an event last year. This year ...
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0answers
24 views

User with Send on Behalf can Send As

USING M-EXCH 2013 AND OUTLOOK 2013 I have created a brand new user, 'test', that has no special permissions in exchange, I have specified that this user can send on behalf of another user, 'Support'. ...
0
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1answer
45 views

mail.log for PHP mails [closed]

I got a new server. When I get a new server I always activate mail.log in php.ini. I did again too. Path is /var/log/phpmaillog I restart httpd and I also created the file with touch ...
2
votes
1answer
137 views

Postfix Rejects incoming bounce notifications ( Recipient address rejected: User unknown in local recipient table )

So I've set up a postfix email server, I can send, I can receive. But I noticed some interesting activity in my logs. I was testing an accidentally sent to a non-existent email address, now the ...
2
votes
2answers
130 views

invoke filtering manually in dovecot+sieve

I've configured dovecot with a sieve filtering (also I've configured roundcube, but this does not matter I think). It's working fine, I've set up some filters. But now I've got a huge unfiltered ...
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2answers
56 views

Anonymous Exchange 2010 Inbox

I've set up a mailbox like suggestionbox@domain.com that we would like people to be able to send emails to anonymously, creating a Transport Rule in Exchange 2010 as in this question: Is there a way ...
0
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1answer
72 views

Sending outgoing mail from multiple e-mail accounts (of different domains hosted on the same server) using sSMTP

I'm hosting multiple domains in my public html folder of an ubuntu-nginx vps server. And I currently have my 'ssmtp.conf' file set up successfully to send outgoing mail(contact, registration, ...
2
votes
1answer
303 views

Postfix/Dovecot: SASL LOGIN authentication aborted

I use Postfix together with Dovecot (auth/LMTP) on my mailserver. Everything is working fine, but I notice several warnings in the log-files each day: postfix/smtpd[4169]: warning: ...
1
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1answer
113 views

Postfix: For a certain address, only allow emails from a certain domain

I've set up my server so that, in order to track down the source of spam (and block it), the email address that I use to sign up for stuff is service_name@example.com (e.g. for Facebook, it would be ...
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votes
2answers
72 views

Exchange server accepts email without authentication. Is this a misconfiguration?

I am a user on a network with an exchange server and there is an HP scanner/email machine that can send emails with scanned docs as an attachment from any email address without authentication so I ...
0
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1answer
141 views

How to drop orig_to using postfix virtual domains?

With the virtual domains, the final mailbox receiving the email gets the orig_to email address in its header. Is there a way to prevent this (i.e. address translation without keeping the orig_to)?
0
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1answer
54 views

Postfix with external SMTP

I'm trying to install Request Tracker and configure it to use an external SMTP server to sent mail notifications. I've already put postfix to send emails using this tutorial, but it keeps sending then ...
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1answer
57 views

Email Sending over Distributed System?

Guys I am wondering if it is possible to setup "Mail Server" (like MailEnable) over different servers so that the load is distributed equally on all servers ? For example : I am sending 100 emails ...
0
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1answer
33 views

SNORT only alerting on inbound traffic

I am trying to raise an alert when someone is setting up a connection to PORT 25 (tcp), whatever source or destination. For this i came up with this simple rule: alert tcp any any -> any 25 ...
-1
votes
1answer
60 views

The mail server logs will indicate time out when some customer sent the email to us

We are using the Icewarp mail server with version: 11.1.2 Recently the mail server will indicate time out in the logs when some customers sent the email to us. It is the same even thought I added the ...
0
votes
2answers
387 views

Amavis to Postfix forwarding

I have a postfix mail-server and want to use amavis for spam and virus detection. I followed this tutorial to add amavis to my running mail-server. I added to /etc/postfix/main.cf: content_filter = ...
0
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1answer
85 views

Gmail SPF misconfigured

The SPF entry for gmail.com is a redirect to _spf.google.com: $ dig gmail.com txt @8.8.8.8 +short "v=spf1 redirect=_spf.google.com" _spf.google.com is a redirect to 3 other entries $ dig ...
0
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1answer
110 views

ISPconfig / Dovecot - Mysql went down = Mails gone? [closed]

So im running ISPconfig with Dovecot as mail-server (storing mails via mysql). Yesterday i made some changes to the mysql-config. I wanted the server to answer also External Requests. The Problem ...
0
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1answer
479 views

lots of email from one user, probably spam

I'm getting a continuous flow of messages in the mail.log file of our postfix mail server. Here is a santisied sample: postfix/qmgr[7883]: 03DF631E8F: from=<user@problem.com>, size=1021, ...
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1answer
140 views

Postfix alias only forwarding to local users

I have set up Dovecot and Postfix using this tutorial, which works for receiving and sending mail. The aliases also work fine, although only for local users. I.e. I can make a forward from ...
0
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1answer
663 views

Outlook 2013 won't connect to Office 365 (Exchange)

I have a multiple users with a roaming profiles on a windows server 2008R2 domian. One of these 2013 Outlook profiles won't connect to Exchange on one of the computers. Here's what I've tested: Let's ...
1
vote
1answer
20 views

Don't Email Distribution Group Owner

In our Exchange 2013 system when a new distributionn group is created it is requiring us to give it an owner. When you add a owner they then also recieve emails sent to this group (the check to add ...
2
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1answer
3k views

Sending mail notifications from Windows Server 2003 Powershell 2.0 to Office 365

My script is meant to suck up errors in scheduled tasks that don't complete correctly and sends them to my email address via Office365: $reportHTML = Get-Content C:\windows\tasks\SchedLgU.Txt | ...
0
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1answer
171 views

Postfix not sending authentication when relaying to local smtp server

I have been trying to get my postfix server to relay all of my message to a local SMTP server. As far as I can tell I have everything set up right, but I get a 550 Authentication error. My local SMTP ...
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1answer
133 views

How does zimbra procedes with sending email to the same domain if zimbra is configured to relay the messages to a proxy server

Does zimbra relay emails that are from the same domain as the expeditor or the emails are send directly to the zimbra mailbox without going trougth the relay server? I have a mail p1@example.com and ...