421 Too Many Concurrent Smtp Connections Error Message
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Plans & Pricing Partners Support Resources Preview Forums Forums Quick Links Search Forums New Posts Search titles only Posted by Member: Separate names with a comma. Newer Than: too many concurrent smtp connections thunderbird Search this thread only Search this forum only Display results as threads too many concurrent smtp connections from this ip address More... Useful Searches Recent Posts Resources Resources Quick Links Search Resources Most Active Authors Latest Reviews Feature Requests Defects Menu 421 too many concurrent smtp connections cpanel Log in Sign up The Community Forums Interact with an entire community of cPanel & WHM users! cPanel Forums > cPanel & WHM® (for Linux® Servers) > E-mail Discussions > This too many concurrent smtp connections outlook for mac site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More. 421 Too many concurrent SMTP connections; please try again later Discussion in 'E-mail Discussions' started by DWHS.net, Mar 1, 2009. DWHS.net Well-Known Member PartnerNOC Joined: Jul 28, 2002 Messages: 1,547 Likes Received: 3 Trophy Points: 38 Location: LA, Costa RIca cPanel Access Level: Root Administrator
421 Too Many Concurrent Smtp Connections From This Ip Address Please Try Again Later
Anyone know what causes the server to have too many concurrent SMTP connections? Is it the firewall or just exim preset limit. Some sending emails are failing from this. Live in the moment - WebHost.pro Fast Web Hosting | Affiliate Program | Host Speed Test #1 DWHS.net, Mar 1, 2009 JPC-Martin Active Member PartnerNOC Joined: May 31, 2008 Messages: 37 Likes Received: 1 Trophy Points: 8 It means that there are to many open SMTP connections either incoming or outgoing.The default is 20, you can raise that with the smtp_accept_max command in your configuration file. you can check connections through command: cat /etc/exim.conf |grep smtp_accept_max Martin.K | JaguarPC.com JaguarPC High Class Hosting since 1998* Unmanaged VPS Hosting | Managed VPS Hosting | Fail Over Hosting #2 JPC-Martin, Mar 1, 2009 DWHS.net Well-Known Member PartnerNOC Joined: Jul 28, 2002 Messages: 1,547 Likes Received: 3 Trophy Points: 38 Location: LA, Costa RIca cPanel Access Level: Root Administrator JPC-Martin said: ↑ It means that there are to many open SMTP connections either incoming or outgoing.The default is 20, you can raise that with the smtp_accept_max command in your configuration file. you
Error 421: too many concurrent smtp connections Error 421: too many concurrent smtp connections4.71 (94.29%) 7 votesOn high traffic email servers you may see this kind of
Smtp04.mailcore.me: Too Many Concurrent Smtp Connections; Please Try Again Later.
errors, it's very normal in some situations when your users use lot the server responded 421 too many concurrent s of email. It basically means that there are a lot of open SMTP connections (incoming and/or outgoing). The cat /etc/exim.conf |grep smtp_accept_max exact error message may be something like:421 Too many concurrent SMTP connections from this IP address; please try again later.How to fix Error 421 too many concurrent smtp connections?First https://forums.cpanel.net/threads/421-too-many-concurrent-smtp-connections-please-try-again-later.109433/ we have to check out what's the smtp_accept_max value for our email server. In the case of cPanel servers, you just have to run a grep command against Exim configuration file, example:grep smtp_accept_max /etc/exim.confThen edit the variable and assign more simultaneous connections. Restart Exim to apply changes:service exim restartWhy does the Error 421 too many concurrent smtp connections https://cpaneltips.com/error-421-too-many-concurrent-smtp-connections/ happen? As we said, there are a number of valid reasons, but also it may indicate some kind of serious problem with your server.Valid reasons:Normal high traffic: in some times of the year like holidays, special dates like july 4th, christmas or new year.Newsletters: some of your users may be using massive newsletter and this can cause Exim to serve more connections than usual.Ilegitimate reasons:Coding errors: we've seen email loops in the code of webpages more than once, also con email client such as Outlook. This kind of behaviour can cause emails to be sent again and again, opening too many connections.Virus/Malware: malware and virus are uploaded to thousand of websites each day, causing damage in networks, companies and more. And one of the most common activities that crackers love is to use your email server as mail bomb server, to send tons of emails each day.Email hacking: if you are using weak passwords (like john123) on your email accounts they can be hacked easily using brute force attacks, and then used t
links. You can target relevant areas of the site and show ads based on geographical location of the user if you wish. https://forums.digitalpoint.com/threads/421-too-many-concurrent-smtp-connections-please-try-again-later.1258986/ Starts at just $1 per CPM or $0.10 per CPC. 421 Too http://www.webhostingtalk.com/showthread.php?t=401314 many concurrent SMTP connections; please try again later Discussion in 'Site & Server Administration' started by dwhswebhosting, Mar 7, 2009. 0 dwhswebhosting Active Member Messages: 91 Likes Received: 3 Best Answers: 0 Trophy Points: 78 #1 I have a linux server but seem to get too many smtp connections too many at once. Do you know how I can see who is connecting so much to my smtp so much? It's centos 4.5 linux host dwhs and it runs cpanel Here is the error: 421 Too many concurrent SMTP connections; please try again later dwhswebhosting, Mar 7, 2009 IP FreedomOverdose Peon Messages: 172 Likes Received: 4 Best Answers: 0 Trophy Points: 0 too many concurrent #2 do you use any firewalls? FreedomOverdose, Mar 7, 2009 IP flamer Peon Messages: 757 Likes Received: 16 Best Answers: 0 Trophy Points: 0 #3 ask your host to flush out all the connections made by your ip, there are over 21 connection attempts going on at a time, that is why this error appears up. flamer, Mar 7, 2009 IP (You must log in or sign up to reply here.) Show Ignored Content Log in with Facebook Your name or email address: Do you already have an account? No, create an account now. Yes, my password is: Forgot your password? Stay logged in Digital Point Home Forums > Development > Site & Server Administration > Log in to view your Analytics, AdSense & PayPal stats Home Forums Search Forums Recent Posts Spy Search EnginesGoogleAdSenseGuidelines / CompliancePlacement / Reviews / ExamplesReporting & StatsPaymentsAdWordsAnalyticsGoogle+SitemapsGoogle APIShoppingYahooPublisher NetworkSearch MarketingYahoo APIBingBing AdsAll Other Search EnginesDirectoriesSolicitations & AnnouncementsODP / DMOZBusiness & MarketingGeneral BusinessGeneral MarketingSearch Engine OptimizationKeywordsMicrodataPayment ProcessingPayPalSocial NetworksFacebookFacebook APITwitterGoogle+Link DevelopmentLegal IssuesDomain NamesAppraisalsCopywritingArticle MarketplaceeCommercePay Per Click AdvertisingDigital Point AdsGoogle AdWordsYahoo Search MarketingBing AdsAffiliate ProgramsAffiliate Program ManagementCommission JunctionGoogleeBayAmazonClickBankChitikaDesign
Forums Web Hosting this can not be good - smtp error If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. Results 1 to 12 of 12 Thread: this can not be good - smtp error Tweet Thread Tools Show Printable Version Subscribe to this Thread… Search Thread Advanced Search Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode 05-03-2005,01:57 PM #1 Project X View Profile View Forum Posts View Forum Threads Web Hosting Master Join Date Aug 2003 Location Twin Cities Area Posts 5,651 this can not be good - smtp error An unknown error has occurred. Account: 'HostLookUp.info', Server: 'mail.hostlookup.info', Protocol: SMTP, Server Response: '421 Too many concurrent SMTP connections; please try again later.', Port: 25, Secure(SSL): No, Server Error: 421, Error Number: 0x800CCC67 i have NEVER seen anything like this before... help... if you haven't considered chapter 7 bankruptcy, maybe you should. eliminate your debt, keep the property you want, most people qualify. contrary to popular belief - no attorney is necessary! Reply With Quote 0 05-03-2005,02:00 PM #2 Amir View Profile View Forum Posts View Forum Threads Visit Homepage divine hosting experience™ Join Date Aug 2002 Location New York, NY Posts 667 Greetings, Whether its good or not, the only one way to get it solved is to contact PamperedHosting.com directly. As the message indicated, seems there are way to many SMTP connections. | Too many concurrent SMTP connections | PS: Seems the domain and everything is registered under your name and aparently PamperedHosting.com belongs to yourself. Then try to restart the mailservers on 207.58.149.139. That should help. Amir Golestan Executive Director | Micfo delivering the divine hosting experience™ | AS53889 www.micfo.com Reply With Quote 0 05-03-