VPS As Mailserver
Apr 15, 2009
I've got some questions regarding use of a VPS as a mail-server. I've had this little domain since 1996, and it's not only my main e-mail but now also my family, extended family, close friends and work colleagues. No complaints with my current shared host, except their mail-server just isn't cutting it. They've even stated as much, and suggested users not happy about performance move to g-mail. Whatever, I want my name at my domain. So, I'm thinking I should just get myself a VPS to use mostly as a mail-server (the website it self gets like, 10 unique hits/month from totally lost Googlers)
I'd like to keep things around $70/month, a price well worth it IMHO to not have to be told 'the webmail is down again.' I have no way to determine my total mail bandwidth, but I'm guessing 10-20 legitimate e-mails in and out per day with about 2 dozen users.
Any thoughts on pitfalls, or advice? How does the actual network connection work? I.E, if the VPS has a 10mbps Ethernet connection with 10 total users, does each user get a dedicated 1mbps connection? Also, any good recommendations? I'm looking a liquidweb, but really have no clue. Location doesn't matter, but I'm Ohio so anything nearby might be refreshing for a change.
My technical experience isn't great, but I am able to RTFM and have setup a Debian server on scrap hardware with trixbox installed, so I'm guessing it's not much harder than that. This all kind of started out as a hobby, but has oddly enough become a bit vital for myself and others who use email@mydomain.
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Mar 15, 2007
We're having a problem with a few clients saying that people are sending email to them but that the emails are not getting through. They ran their domain name via a system that tests email servers and it came back with the following issues for the server:
"There was a problem while talking with the mail server. Got 'Socket Timeout Exception: Read timed out'"
The mailserver we're running is Exim. The domain name is www.newwritingnorth.com and the site they used for testing is here:
[url]
we ARE getting emails in, but just not from some people, so its a strange one
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May 8, 2009
I have an issue with o2 - some of their mailservers have blacklisted IPs and hence mail doesn't get delivered to recipients whose ISPs subscribe to the specific blacklists.
Questions:
1 If mail is not delivered, will I ALWAYS know about it?
I've had bounce notifications from one specific ISP, but I'm wondering whether in other cases the mail will just not get through and I'll not know about it.
2 I'm aware of problems with two specific o2 IPs:
82.132.130.151
82.132.130.169
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Apr 16, 2008
I am talking about a WHM/Cpanel setup. Is there a way to convince the Exim mailserver (MTA) to get any of the hosted domain name in the "HELO" greeting when dispatching mail? Many ISPs deny accepting mail when the smtp domain name in the setting of a mail client program does not match the vps main hostname.
The only workaround seems to be to change the smtp server name for all domains to be identical to the main server (setup) name.
In detail: When you setup more then one domain on your vps and use your own dns/bind, then CPanel installs the domain records in a way that mail exchange is set to e.g.
firstdomain.com. 14400 IN MX 10 mail.firstdomain.com.
...
mail 14440 IN A 111.111.111.111
which basically instruct your vps that email client programs can connect to the "firstdomain.com" host for pop (imap) as well as smtp using the subdomain name mail.firstdomain.com with the respective ports.
Now, Cpanels MTA (mail transfer agent) exim uses only the vps setup domain name as mailserver address and all Outgoing eMails always show the setup domain or one of its subdomains (depending on setup) in the mail header, no matter which of your vps domains sends the mail.
This way you most likely run into the situation that a couple of ISPs deny accepting your (or your clients) eMails because your (actually one and only) "mailserver does not have their host name in the greeting".
technically, if you telnet (no need to ssh) to mail.firstdomain.com on port 25 the response will be
220-setup.maindomain.com ESMTP Exim 4.52 #1 Sun, 26 Mar 2006 ...
220-We do not authorize the use of this system to transport unsolicited,
220 and/or bulk e-mail.
and, in case you send a helo command to this connection, the result is
helo
250 setup.maindomain.com Hello [11.22.33.44]
That means some mails sent out with mail.firstdomain.com might be rejected as spam.
Is there a way to get exim to display
250 mail.firstdomain.com Hello [11.22.33.44]
or
250 mail.seconddomain.com Hello [11.22.33.44]
etc
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Oct 21, 2009
I want to create a mailserver setup ( SMTP/POP3/IMAP/SSL) in my server which in public network.Can any one suggest the Webbased GUI interface tool which manages my mailserver setup . The tool must able to manage users ( creating mail users,allocating quato).
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Apr 3, 2008
Streamyx is the largest ISP in Malaysia and a few weeks ago, any emails sent out via my dedicated server to @streamyx.com would bounce.
Servstra & PSM are convinced that Streamyx has blocked my IP but Streamyx is saying that they haven't. I've tried getting Servstra to change the SMTP server to a different unused IP but that didn't resolve the error either.
If I send emails to the same streamyx.com account via yahoo or gmail, they get through immediately.
I really need to resolve this.. nearly everybody has a streamyx account here and it's impossible to work like this. Any ideas would be greatly appreciated!
================
[root@ice db]# tail -f /var/log/exim_mainlog| grep judah7@streamyx.com
2008-03-31 10:13:25 1Jg9WX-0000Vg-42 == judah7@streamyx.com R=lookuphost T=remote_smtp defer (0): SMTP error from remote mail server after initial connection: host mx.tm.net.my [202.188.0.213]: 452 try later
================
[root@ice ~]# telnet mx.tm.net.my 25
Trying 202.188.0.213...
Connected to mx.tm.net.my (202.188.0.213).
Escape character is '^]'.
452 try later
Connection closed by foreign host.
^^^^^^^^^^^^^^^^^^^^^^^^^^
If I use my Dathorn account, these are the telnet results...
^^^^^^^^^^^^^^^^^^^^^^^^^^
isp@dathorn [~]# telnet mx.tm.net.my 25
Trying 202.188.0.213...
Connected to mx.tm.net.my (202.188.0.213).
Escape character is '^]'.
220 mx.tm.net.my -- Server ESMTP (MX) TMnet
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Aug 1, 2008
I'm having some serious issues.. I moved to a new dedicated server company and found out that the IP block I was on was blacklisted with 5 anti-spam lists.
However, the company is great and they have managed to get the IP block out of every single black list.
However, I am still having issues. My server does not seem to be listed on any blacklists but emails sent out to various places, get bounced back with the following types of errors.
Any suggestions or advice? Any server administrators who think they can fix this? Please PM me with your quote.
Code:
SMTP error from remote mail server after initial connection:
host umip1.um.edu.my [202.185.111.224]: 554 umip1.um.edu.my
Code:
SMTP error from remote mail server after initial connection:
host mailfilter.hi-light.com.tw [210.71.187.212]:
554-IP650-02.hibox.hinet.net
554 Your access to this mail system has been rejected due to the
sending MTA's poor reputation.
Code:
SMTP error from remote mail server after initial connection:
host gateway.kaf.com.my [203.109.48.229]: 554-gateway.kaf.com.my
554 Connections from your server *ip removed* are being refused due to poor reputation.
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Jun 6, 2007
I've got a question about how SMTP server will act in a situation like this...
Let's say I have a domain with 2 MX records:
Quote:
domain.com. IN MX 10 mx1.domain.com.
domain.com. IN MX 20 mx2.domain.com.
Now, imagine that one particular user will go over his quota on mx1.domain.com. Will sender's SMTP server try to relay his messages to mx2.domain.com or will they just get bounced by mx1?
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Jun 15, 2009
I have been having issues with spam on my mail server. I tested the server at abuse.net and test 6 fails with the following result:
Relay test 6
>>> RSET
<<< 250 Reset OK
>>> MAIL FROM:<spamtest@mydomain.com>
<<< 250 OK
>>> RCPT TO:<admin%abuse.net@mydomain.com>
<<< 250 Accepted
>>> DATA
<<< 354 Enter message, ending with "." on a line by itself
>>> (message body)
<<< 250 OK id=1MGLZF-0002Jz-IZ
I have been trying for hours to close this hole with no success. I am running the server using cPanel / WHM which supposedly closes open relay by default, I have tried tweaking the settings,
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Jun 29, 2008
i have a webserver (mailserver) already running example ABC.com now i want to buy extra server that will be used only to send newsletter to members of ABC.com. Is it possible to do it? Also i dont want to break the existing mailserver as it is used by staff so this new server has to operate independently but of course this has to appear and has to be legitimate.
One of my idea is to setup a subdomain for ABC.com lets say mail2.abc.com and point to a new server but again how it will appear if i send email from info@abc.com when its subdomain!
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Jul 9, 2009
SmarterMail 5.x is setup on one of our servers into Plesk 9.2. Just wondering how I configure a domain to use an external mailserver.
For example, the domain mydomain.org is running it's own extermal
mailservers;
mail.mydomain.org
mail2.mydomain.org
In MailEnable I would do the following;
- Start | Programs | Mailenable Administrator
- MailEnable | MailEnable Management | Messaging Manager | Post Offices
- Expand the mydomain.org domain
- Right-click the Domains folder and choose 'Properties"
- Select the 'domain is disabled' checkbox
- Select the 'Act as Smart Host'
checkbox
- In the 'Redirect mail to' textarea enter in the external
mailserver names;
mail.mydomain.org
mail2.mydomain.org
How can I configure SmarterMail to use the external mailservers of a domain?
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Sep 28, 2007
We switched to a 3rd party mail server provided by our local ISP, however when attempts are made to mail anyone on our domain a message similar to one of the following is received:
Quote:
This is an automatically generated Delivery Status Notification
Delivery to the following recipient failed permanently:
my_email_address@our_domain
Technical details of permanent failure:
PERM_FAILURE: SMTP Error (state 13): 550 5.7.1 <my_email_address@our_domain>... Relaying denied
or
Quote:
Hi. This is the qmail-send program.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.
<my_email_address@our_domain>:
70.43.63.21 does not like recipient.
Remote host said: 550 5.7.1 <my_email_address@our_domain>... Relaying denied Giving up on 70.43.63.21.
I've made sure the MX records are in place on our nameserver, and I've verified this with DNS Stuff.
I seem to think the problem is on our ISP's end.
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Nov 12, 2014
We set up a Plesk 12 server for web hosting purposes only.
All mail-related services, exception from "smtp server" and "Plesk milter" are disabled or uninstalled.
For specific domains, we want to prevent the useage of the php mail function with "localhost" to avoid problems with outgoing spam by unsecured scripts. Instead, we want to force webmasters to use external smtp servers.
Is there any directive or setting on domain-level that we allow for this limitation?
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Jul 3, 2009
I don't know I was clearly enough in the title, the problem is that one of my clients has his own mailserver, I host only his website, and he uses a local server for emails.
For the rest of websites which are hosted on this server, everything is ok, intodns.com reports this message :
You have reverse (PTR) records for all your IPs, that is a good thing.
But for the website which has the mailserver on another server it fails the PTR test on intodns.com
ERROR: No reverse DNS (PTR) entries. The problem MX records are:
2.218.77.82.in-addr.arpa -> no reverse (PTR) detected
You should contact your ISP and ask him to add a PTR record for your ips
I have checked Tailor Made Servers control panel, and I have the option to set Reverse DNS for every IP alocated on my server, and for now all the websites (30) shares the same IP ..
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Aug 18, 2008
I am having a problem with a client who's using Mail.app and it seems to be sending invalid packets to the server. Here is a sample of the report from the firewall:
Code:
Hits: 21
Blocked: permanently
Sample of block hits:
Aug 17 11:24:14 hosting kernel: Firewall: *INVALID* IN=eth0 OUT= MAC=00:30:1b:43:f6:3a:00:19:30:01:a1:40:08:00 SRC=90.196.160.135 DST=72.167.47.155 LEN=52 TOS=0x00 PREC=0x00 TTL=54 ID=48970 PROTO=TCP SPT=49174 DPT=143 WINDOW=65535 RES=0x00 ACK FIN URGP=0
Aug 17 11:24:14 hosting kernel: Firewall: *INVALID* IN=eth0 OUT= MAC=00:30:1b:43:f6:3a:00:19:30:01:a1:40:08:00 SRC=90.196.160.135 DST=72.167.47.155 LEN=52 TOS=0x00 PREC=0x00 TTL=54 ID=5724 DF PROTO=TCP SPT=49173 DPT=143 WINDOW=65535 RES=0x00 ACK FIN URGP=0
Aug 17 11:24:14 hosting kernel: Firewall: *INVALID* IN=eth0 OUT= MAC=00:30:1b:43:f6:3a:00:19:30:01:a1:40:08:00 SRC=90.196.160.135 DST=72.167.47.155 LEN=52 TOS=0x00 PREC=0x00 TTL=54 ID=23624 DF PROTO=TCP SPT=49176 DPT=143 WINDOW=65535 RES=0x00 ACK FIN URGP=0
Aug 17 11:24:14 hosting kernel: Firewall: *INVALID* IN=eth0 OUT= MAC=00:30:1b:43:f6:3a:00:19:30:01:a1:40:08:00 SRC=90.196.160.135 DST=72.167.47.155 LEN=52 TOS=0x00 PREC=0x00 TTL=54 ID=49421 DF PROTO=TCP SPT=49175 DPT=143 WINDOW=65535 RES=0x00 ACK FIN URGP=0
Aug 17 11:24:15 hosting kernel: Firewall: *INVALID* IN=eth0 OUT= MAC=00:30:1b:43:f6:3a:00:19:30:01:a1:40:08:00 SRC=90.196.160.135 DST=72.167.47.155 LEN=52 TOS=0x00 PREC=0x00 TTL=54 ID=10507 DF PROTO=TCP SPT=49176 DPT=143 WINDOW=65535 RES=0x00 ACK FIN URGP=0
Aug 17 11:24:21 hosting kernel: Firewall: *INVALID* IN=eth0 OUT= MAC=00:30:1b:43:f6:3a:00:19:30:01:a1:40:08:00 SRC=90.196.160.135 DST=72.167.47.155 LEN=52 TOS=0x00 PREC=0x00 TTL=54 ID=38488 DF PROTO=TCP SPT=49176 DPT=143 WINDOW=65535 RES=0x00 ACK FIN URGP=0
Aug 17 11:24:21 hosting kernel: Firewall: *INVALID* IN=eth0 OUT= MAC=00:30:1b:43:f6:3a:00:19:30:01:a1:40:08:00 SRC=90.196.160.135 DST=72.167.47.155 LEN=52 TOS=0x00 PREC=0x00 TTL=54 ID=25402 DF PROTO=TCP SPT=49175 DPT=143 WINDOW=65535 RES=0x00 ACK FIN URGP=0
Aug 17 11:24:29 hosting kernel: Firewall: *INVALID* IN=eth0 OUT= MAC=00:30:1b:43:f6:3a:00:19:30:01:a1:40:08:00 SRC=90.196.160.135 DST=72.167.47.155 LEN=52 TOS=0x00 PREC=0x00 TTL=54 ID=18975 DF PROTO=TCP SPT=49176 DPT=143 WINDOW=65535 RES=0x00 ACK FIN URGP=0
Aug 17 11:24:29 hosting kernel: Firewall: *INVALID* IN=eth0 OUT= MAC=00:30:1b:43:f6:3a:00:19:30:01:a1:40:08:00 SRC=90.196.160.135 DST=72.167.47.155 LEN=52 TOS=0x00 PREC=0x00 TTL=54 ID=52260 DF PROTO=TCP SPT=49175 DPT=143 WINDOW=65535 RES=0x00 ACK FIN URGP=0
Aug 17 11:24:29 hosting kernel: Firewall: *INVALID* IN=eth0 OUT= MAC=00:30:1b:43:f6:3a:00:19:30:01:a1:40:08:00 SRC=90.196.160.135 DST=72.167.47.155 LEN=52 TOS=0x00 PREC=0x00 TTL=54 ID=18208 PROTO=TCP SPT=49174 DPT=143 WINDOW=65535 RES=0x00 ACK FIN URGP=0
Aug 17 11:24:45 hosting kernel: Firewall: *INVALID* IN=eth0 OUT= MAC=00:30:1b:43:f6:3a:00:19:30:01:a1:40:08:00 SRC=90.196.160.135 DST=72.167.47.155 LEN=52 TOS=0x00 PREC=0x00 TTL=54 ID=30469 DF PROTO=TCP SPT=49176 DPT=143 WINDOW=65535 RES=0x00 ACK FIN URGP=0
Aug 17 11:24:45 hosting kernel: Firewall: *INVALID* IN=eth0 OUT= MAC=00:30:1b:43:f6:3a:00:19:30:01:a1:40:08:00 SRC=90.196.160.135 DST=72.167.47.155 LEN=52 TOS=0x00 PREC=0x00 TTL=54 ID=36698 DF PROTO=TCP SPT=49175 DPT=143 WINDOW=65535 RES=0x00 ACK FIN URGP=0
Aug 17 11:24:45 hosting kernel: Firewall: *INVALID* IN=eth0 OUT= MAC=00:30:1b:43:f6:3a:00:19:30:01:a1:40:08:00 SRC=90.196.160.135 DST=72.167.47.155 LEN=52 TOS=0x00 PREC=0x00 TTL=54 ID=7445 PROTO=TCP SPT=49174 DPT=143 WINDOW=65535 RES=0x00 ACK FIN URGP=0
Aug 17 11:24:45 hosting kernel: Firewall: *INVALID* IN=eth0 OUT= MAC=00:30:1b:43:f6:3a:00:19:30:01:a1:40:08:00 SRC=90.196.160.135 DST=72.167.47.155 LEN=52 TOS=0x00 PREC=0x00 TTL=54 ID=47645 DF PROTO=TCP SPT=49173 DPT=143 WINDOW=65535 RES=0x00 ACK FIN URGP=0
Aug 17 11:25:17 hosting kernel: Firewall: *INVALID* IN=eth0 OUT= MAC=00:30:1b:43:f6:3a:00:19:30:01:a1:40:08:00 SRC=90.196.160.135 DST=72.167.47.155 LEN=52 TOS=0x00 PREC=0x00 TTL=54 ID=30465 DF PROTO=TCP SPT=49176 DPT=143 WINDOW=65535 RES=0x00 ACK FIN URGP=0
Aug 17 11:25:17 hosting kernel: Firewall: *INVALID* IN=eth0 OUT= MAC=00:30:1b:43:f6:3a:00:19:30:01:a1:40:08:00 SRC=90.196.160.135 DST=72.167.47.155 LEN=52 TOS=0x00 PREC=0x00 TTL=54 ID=44590 DF PROTO=TCP SPT=49175 DPT=143 WINDOW=65535 RES=0x00 ACK FIN URGP=0
Aug 17 11:25:17 hosting kernel: Firewall: *INVALID* IN=eth0 OUT= MAC=00:30:1b:43:f6:3a:00:19:30:01:a1:40:08:00 SRC=90.196.160.135 DST=72.167.47.155 LEN=52 TOS=0x00 PREC=0x00 TTL=54 ID=2887 PROTO=TCP SPT=49174 DPT=143 WINDOW=65535 RES=0x00 ACK FIN URGP=0
Aug 17 11:25:17 hosting kernel: Firewall: *INVALID* IN=eth0 OUT= MAC=00:30:1b:43:f6:3a:00:19:30:01:a1:40:08:00 SRC=90.196.160.135 DST=72.167.47.155 LEN=52 TOS=0x00 PREC=0x00 TTL=54 ID=35090 DF PROTO=TCP SPT=49173 DPT=143 WINDOW=65535 RES=0x00 ACK FIN URGP=0
Aug 17 11:26:21 hosting kernel: Firewall: *INVALID* IN=eth0 OUT= MAC=00:30:1b:43:f6:3a:00:19:30:01:a1:40:08:00 SRC=90.196.160.135 DST=72.167.47.155 LEN=52 TOS=0x00 PREC=0x00 TTL=54 ID=4986 DF PROTO=TCP SPT=49176 DPT=143 WINDOW=65535 RES=0x00 ACK FIN URGP=0
Aug 17 11:26:21 hosting kernel: Firewall: *INVALID* IN=eth0 OUT= MAC=00:30:1b:43:f6:3a:00:19:30:01:a1:40:08:00 SRC=90.196.160.135 DST=72.167.47.155 LEN=52 TOS=0x00 PREC=0x00 TTL=54 ID=42867 DF PROTO=TCP SPT=49175 DPT=143 WINDOW=65535 RES=0x00 ACK FIN URGP=0
Aug 17 11:26:21 hosting kernel: Firewall: *INVALID* IN=eth0 OUT= MAC=00:30:1b:43:f6:3a:00:19:30:01:a1:40:08:00 SRC=90.196.160.135 DST=72.167.47.155 LEN=52 TOS=0x00 PREC=0x00 TTL=54 ID=1310 PROTO=TCP SPT=49174 DPT=143 WINDOW=65535 RES=0x00 ACK FIN URGP=0
The report just says Invalid IN. Does anybody have any suggestions on what would be causing this? I use Mail.app myself and have never had problems with it triggering the firewall.
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Feb 17, 2015
I'm using plesk with CentOS 6.6 and the postfix/courier mail services...I tried to connect an existing mail account with a mail program like thunderbird. But I'm not able to connect to it, except when I'm using "no connection security"...So I tried, if manually contacting the POP3s Port is working:
Code:
openssl s_client -ssl3 -host mail.domain.de -port 995
with the following result:
Code:
CONNECTED(00000003)
write:errno=104
---
no peer certificate available
---
No client certificate CA names sent
[code]....
the same results come for trying to connect to port 465 (ssmtp) and 993 (imaps)port 443 (https) seems to work fine..i already checked if the corresponding certificates exist (e.g. /usr/share/imapd.pem) and filled with the standard certificate informtaion given by plesk checking openssl on the server gives the following result:
Code:
# openssl version
OpenSSL 1.0.1e-fips 11 Feb 2013
is there anything I have missed to configure?
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Apr 7, 2009
I am currently with a smaller US-provider where I am running a dedicated gentoo server with a dozen domains (all small stuff, mostly sme/private websites) and 2 dozen email accounts.
The nice thing about the current provider is that he lets me run sub-accounts where the holders of those accounts have their own billing. I let them run a domain/website on my server since its no extra cost for them, but they pay for the domain and extra email space for example w/o me having to care for it. They basically offer a minimum package and add every single thing on top of it, which I like since I do not need any webpage builders, templates whatever else. I rather only pay what I take.
Basically I am happy except for the connection speed, specially for the email. I am in Asia and other people using this server from Europe, and the time it takes to connect, up/download data to the server and to download larger emails is simply out of the normal.
any recommendations there? I am currently paying 75 USD/Mo + domain names. I think this is also a bit on the high side given that the server hardware is a bit out of date by now.
I am looking at the minimum to relocate only the email hosting to some faster service, which would have to have a reasonable storage size (>= gmail) with POP/IMAP access and of course to use my own domain names.
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May 30, 2015
I have the problem that I can't connect to my mailserver tru the mail client (Webmail works fine, I receive mails and can send mails)
But if i try to connect over mailclient I get this error in errorlog:
couriertls: connect: error:1408A0C1:SSL routines:SSL3_GET_CLIENT_HELLO:no shared cipher
What can I do to get connection over mailclient?
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Jun 12, 2015
I changed the Plesk mailserver from Courier to Dovecot. All went good, but after the Install i can not see new E-Mails in my Inbox. Even the Search does not Work.
I can change the Mailserver again and use Courier. This works and i can see my emails. But only with Courier.
Some details:
Inbox has 100 E-mails. After scrolling down to the first emails, i can even see the newest email. But i have to scroll down and load all E-Mails.
Changing "Sort by" from "Date" to "Unread" all emails appear, even the latest. But changing to "Date" the newest email is missing again. Only a Number on my Inbox button shows me there has to be a new email in there.
The Open Xchange Team can not find any errors, the open xchange log looks good.
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Jun 20, 2014
We were using the mailserver on our linux install, but have since changed over to an ms exchange server. With that I removed the mailserver and installed MSMTP relay only mailserver (SMTP client) option.
I configured the External SMTP Server settings under Tools & Settings / Mail with a valid email address password host name and port of 587. When I save it says settings saved.
Since doing this I have been unable to use the email link option for share files in the file share portion of my domain. When I try to select a user from the list to send the email to or even type an external email all I get is the error "Unable to send email".
When I checked the maillog file in /usr/local/psa/var/log, I get this error "Jun 20 15:42:59 u16271698 msmtp: host=smtp.1and1.com tls=off auth=on user=to@email.ca from=psaadm recipients=to@email.ca errormsg='cannot use a secure authentication method' exitcode=EX_UNAVAILABLE"
Where I have proper emails configured where I placed "to@email.ca"
How can I get this working with the MSMTP relay only mailserver (SMTP client) option installed?
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