This is a bit of a nightmare, but here is the problem. 1. My emails where not being delivered to "hotmail" ... my hosting provider said that my block of IPs on my dedicated server were close to those of another customer that was banned because of spamming. Therefore I was issued a new block of IPs. 2. When the problem was discovered, support from hosting provider modified my postfix config (/etc/postfix/main.cf) to a relay host. Since then, I have not been able to send/receive system mail to any accounts in /var/spool/mail. Root's mailbox is empty. 3. I migrated the server to the new block of IPs, but that did not fix the problem. 4. I restored the old postfix config file (prior to all this - namely the relay host chaneg) and that does let postfix send and receive system mail, but sending outside of my server comes back due to relay errors - the bounces wind up in root's mailbox. 5. My hosting provider did something last night and I am again able to send and receive outside of the system, but now I again can't send and receive system messages. Something is screwed up ... I don't know where. I suspect my hosting provider is not relaying correctly or there is a problem locally with postfix. Of note, I am also using courier-imap and squirrel mail. Right now, squirrelmail is working, but again ... as long as there are no bounces or system mails to deliver. Help!
I had something similar to your situation but i finally was able to get rid blocked ISP host from my e-mail route. I bought a co-location service and set up a proxy host on Debian lenny with ASSP and proxy postfix for non-local email delivery. Everything is working fine except that i still need to set-up cname and revDNS for my proxy email gateway. The strangest thing ever i noticed the host is unable to send email to scglobal.net. The error is : Nov 1 13:49:58 proxy postfix/error[17158]: 0AD31105C74A: to=<[email protected]>, relay=none, delay=183349, delays=183349/0.01/0/0, dsn=4.3.0, status=deferred (mail transport unavailable) No idea how to resolve this problem. Everywhere else emails are send with OK status. Didn`t check the gmail.com or yahoo.com but im my interest now is the sbcglobal.net because ppl that use my server want to send the emails there . Nothing seems to resolve it... I tried to set up transport manually but without any sucess. Somebody know how to resolve my problem ?
Server email problems related to postfix I seem to have fixed the problem. Looks like it may have been my fault. When I migrated my server to the new block of IPs. I forgot to update the ip adress in the /etc/hosts file! It seems to be working.
There is a way to setup mail transport ... you are right ... not sure. Maybe somebody can help you out here.
Thank you on your reply. I`m not sure but it seems that sbcglobal, gmail and att has blocked all communication on port 25, they have a 587 and 465 open and i can make a transport to them on this ports but it needs an authentication by username and password. Does that mean i need to have account there to send anything from my corporate e-mail server to them? If that`s true ... i`m not happy by that. Maybe there is a smarthost that can be used for sending email to them ?
did you setup reverse IP to your mail server? if you want to deliver emails to hotmail, yahoo etc, this needs to be done. Just ask your hosting provider to setup reverse ip.
Hello, this is very ill situation. The e-mails are send to gmail.com correctly: Nov 4 16:31:08 proxy postfix/smtp[2937]: 09F40105C744: to=<[email protected]>, relay=gmail-smtp-in.l.google.com[209.85.219.13]:25, delay=9.1, delays=7.2/0.01/0.15/1.7, dsn=2.0.0, status=sent (250 2.0.0 OK 1257352268 17si2870509ewy.82) but sbcglobal.net and this [email protected] have mail transport unavailable. Nov 4 16:03:00 proxy postfix/error[12202]: E44C1105C756: to=<[email protected]>, relay=none, delay=101253, delays=101253/0.01/0/0, dsn=4.3.0, status=deferred (mail transport unavailable) and this : Nov 3 09:54:02 proxy postfix/smtp[14369]: A1121105C756: to=<[email protected]>, relay=mail2.ats.pl[81.15.165.5]:25, delay=0.3, delays=0.04/0/0.22/0.04, dsn=5.7.1, status=bounced (host mail2.ats.pl[81.15.165.5] said: 554 5.7.1 <proxy.miechow.net.pl[193.239.47.26]>: Client host rejected: My email server does not accept emails sent from proxy servers as stated in your revDNS: proxy.miechow.net.pl (in reply to RCPT TO command)) What is going on ?? My DNS entries : dig mx miechow.net.pl ; <<>> DiG 9.5.1-P3 <<>> mx miechow.net.pl ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 50962 ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 3 ;; QUESTION SECTION: ;miechow.net.pl. IN MX ;; ANSWER SECTION: miechow.net.pl. 85434 IN MX 0 solar.miechow.net.pl. miechow.net.pl. 85434 IN MX 5 proxy.miechow.net.pl. ;; AUTHORITY SECTION: miechow.net.pl. 85422 IN NS fns2.sgh.waw.pl. miechow.net.pl. 85422 IN NS fns1.sgh.waw.pl. ;; ADDITIONAL SECTION: proxy.miechow.net.pl. 85422 IN A 193.239.47.26 and revDNS : 26.47.239.193.in-addr.arpa domain name pointer proxy.miechow.net.pl. Any idea what`s going on ?
It seems you`re right Falko. Anyway I don`t care about that unless somebody will be unhappy with this small problem that this host doesn`t like proxy in PTR. The worst is the mail transport unavailable problem ... i really don`t know what is wrong with this setup ... 90% of email hosts are accepting e-mails from my host without any troubles. Only a few hosts are making troubles like no transport or don`t like proxy ... anyway i just want to know how to get rid the error with "no transport ... ".
Checking 193.239.47.26 against 101 known blacklists... Listed 0 times with 3 timeouts. Blacklist Status Reason TTL ResponseTime AHBL OK 31 ANT OK 172 Backscatter.org OK 31 BARRACUDA OK 31 BURNT-TECH OK 31 CASA-CBL OK 203 CASA-CBL+ OK 203 CASA-CDL OK 203 CBL OK 187 CLUECENTRAL OK 187 CYBERLOGIC OK 203 DEADBEEF OK 203 DNSBLINFO OK 203 DUINV OK 203 DULRU OK 328 EMAILBASURA OK 3869 FABELSOURCES OK 203 FIVETEN OK 250 GIRL OK 250 GRIP OK 250 HIL OK 250 HIL OK 250 HILLI OK 328 ICMFORBIDDEN OK 343 IMP-SPAM OK 328 IMP-WORM OK 3806 INTERSIL OK 343 ivmSIP OK 343 ivmSIP/24 OK 343 KEMPTBL OK 343 KUNDENSERVER OK 343 LASHBACK OK 343 LNSGBLOCK OK 343 LNSGBULK OK 343 LNSGDUL OK 343 LNSGMULTI OK 343 LNSGOR OK 343 LNSGSRC OK 343 MSRBL-Combined OK 343 MSRBL-Images OK 343 MSRBL-Phising OK 343 MSRBL-Spam OK 343 MSRBL-Viruses OK 343 NERD OK 343 NETHERRELAYS OK 343 NETHERUNSURE OK 343 NIXSPAM OK 343 NJABL OK 343 NJABLDUL OK 343 NJABLFORMMAIL OK 343 NJABLMULTI OK 343 NJABLPROXIES OK 343 NJABLSOURCES OK 343 NLKUNBLACKLIST OK 343 NLKUNWHITELIST OK 343 NOFALSEPOSITIVE OK 343 NOMOREFUNN OK 3822 ORID OK 3916 ORVEDB OK 1513 OSPAM OK 1513 PDL OK 1513 PSBL OK 1513 RANGERSBL OK 3838 RATS-Dyna OK 2028 RATS-NoPtr OK 2028 RATS-Spam OK 2028 REDHAWK OK 2028 RRBL OK 3838 RSBL OK 3058 SCHULTE OK 3058 SDERB OK 3058 SENDERBASE OK 3058 SERVICESNET OK 3058 SORBS-BLOCK OK 3572 SORBS-DUHL OK 3572 SORBS-HTTP OK 3572 SORBS-MISC OK 3572 SORBS-SMTP OK 3572 SORBS-SOCKS OK 3572 SORBS-SPAM OK 3572 SORBS-WEB OK 3572 SORBS-ZOMBIE OK 3572 SPAMCANNIBAL OK 3572 SPAMCOP OK 3572 Spamhaus-ZEN OK 3572 SPAMSOURCES OK 3666 SPEWS1 OK 3666 SPEWS2 OK 3666 SWINOG OK 3666 TECHNOVISION OK 3666 TRIUMF OK 3666 UCEPROTECTL1 OK 3666 UCEPROTECTL2 OK 3666 UCEPROTECTL3 OK 3666 VIRBL OK 3666 WPBL OK 3666 WSFF OK 3666 ZONEEDIT OK 3666 CSMA TIMEOUT ERROR, Reponse code=2 0 SOLID TIMEOUT ERROR, Reponse code=2 0 SPAMRBL TIMEOUT ERROR, Reponse code=2 0
Sure it would be so simple if only my ISP take their hosts from spamlists. The quick story is : At June 2009 the ISP mail gateway was blocked beacause of massive spam send by some spam robots on their own computers just because they didn`t take care about their antivirus defence. I did a lot of calls to them and told them about that their hosts are on spamlists and asked them to do something with that. They just did nothing. My ISP left me on my own. So i decided to do something to be able to send e-mails from my servers because my clients was angry on ME not on the ISP company that left me alone with the problem. The worst is they are monopolyst and i cannot definitivly cut my company from this ISP. So my idea was to take another server that is far away from my ISP network and set the proxy email gateway to get rid of problem with ISP hosts that are on spamlists. My idea works as you see but with some troubles and I want to make it to work better than now. And that`s the situation I am now.
Yes, other mailservers might refuse to accept mails from you if there is no SPF record for your domain.
Hey Dpicella I am rojertwose I read your problem it not hard just you have to follow the technically step and there are also possible due to traffic and virus problem.
