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Closed 9 years ago.
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I have installed sendmail on my webserver. Sending and receiving emails does work, but when I use authentication on port 25 ( to avoid spam attacks), I can't receive emails anymore.
All I get is an authentication error.
Is there a way to deactivate authentication in sendmail for incoming mail?
Edit 1 : In my sendmail configuration I have this lines:
DAEMON_OPTIONS(Name=ESMTP,Port=465,Modifiers=a')
DAEMON_OPTIONS(Name=STARTTLS,Port=587,Modifiers=a')
DAEMON_OPTIONS(`Name=SMTP,Modifiers=a')
You can not force authentication on port SMTP (25) if you want to receive messages from "strangers" (other SMTP hosts worldwide).
You should require authentication on SMTPS (465) and MSA (587) ports.
You may reject connection from DUL (dynamically allocated) IP addresses for unauthenticated connections and addresses listed by other DNSBL lists. Use FEATURE(enhdnsbl,...) with some DNSBL listing DUL ranges and FEATURE(delay_checks,...).
BTW You have missed s Modifier for SMTPS.
DAEMON_OPTIONS(`Name=SMTPS,Port=465,Modifiers=sa')
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Is there anyway to send an email to an external smtp server?
my smtp server is XXX.XXX.XXX.66, listening on port 25
Is there a single command to send an email to this server a on port 25 without any setting up any cfg files?
When googling, the different commands like mailx or sendmail have very complicated parameters and many that i dont require like ssl etc.
If you are referring to sending email from within the database, you can
set database parameter "smtp_out_server" to "XXX.XXX.XXX.66:25"
then use the UTL_MAIL package to send emails
That is probably the quickest and easiest way to send simple emails.
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Closed 4 years ago.
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I have a squid proxy server with 10 public IP addresses, I am using it precisely for the purpose of outgoing address. I want this multiple IP addresses to be randomly elected and changed every 2 minutes when the requests go out of the server. is that possible? how to do it in a server side, and what exactly we need to do in the client side?
Regards
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Closed 7 years ago.
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In ping , is it the replay echo and request echo take the same routes ?
and why ?
in other terms do reply messages take the reverse path of the request messages ?
A Ping is in fact an ICMP packet either indicating a request or reply. I would say that the answer to your questions in general is No since there's no guaranty that the path from your host to the destination is the same as the path from the destination to your host. Normally, this depends on the current status of the Network, the routing protocol used by your ISP and many other parameters.
Any way the ping is intended to calculate the round-trip delay (RTT) between your host and the destination. Thus, if the packets are traversing the same path or not should be transparent to any application you are using.
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Closed 7 years ago.
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I've setup PostFix on my server, and it's sending and receiving properly. I would like, however, to be able to use the PostFix server running on my box as an SMTP server, as in, I want to connect to my server and PostFix account within Gmail, so that I can send emails from my server from other locations.
The only reason I highlighted that point so much is because after a lot of searching all I can find is how to setup PostFix to access other SMTP servers, and that's not what I want.
There are three different programs (or processes) involved in the transactions you are describing:
Mail Transport Agents (MTA's) like PostFix or Sendmail, which relay mail to each other and then drop it into a mailbox (typically /var/spool/mail) at the last hop.
Client programs (like Gmail or Thunderbird) which pickup mail from the mailbox and present it to the end-user. These clients typically use the IMAP protocol to retrieve the mail from a mailbox.
And finally, an IMAP server (often Dovecot) which accepts IMAP requests and reaches into the mailbox created by Postfix to return mail to a user.
So you need to install Dovecot (or some other similar program) on your machine to accept requests from Gmail for your account. Dovecot and PostFix will work with each other to properly transfer mail from the relays to your account mailbox.
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Closed 7 years ago.
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I have a server which hosts mywebsite.com
If I try to send mail to info#mywebsite.com, the MTA is trying to send it to a local host (the mail is managed on a different server). How can I fix this?!
Its a linux server running qmail
Any more info needed please ask
Thanks!
Figured it out, the system has Plesk on it, needed to disable the mail service on the domain to stop it from sending to itself