[SLUG] MX problem with sendmail
Can someone remind me what the fix is for the following sendmail error: 553 some.domain.com. config error: mail loops back to me (MX problem?) I know it is in the bat book somewhere, but I just cannot find it. Howard. LANNet Computing Associates http://lannetlinux.com "...well, it worked before _you_ touched it!" -- SLUG - Sydney Linux User Group Mailing List - http://slug.org.au/ More Info: http://slug.org.au/lists/listinfo/slug
Re: [SLUG] MX problem with sendmail
On Mon, Jan 15, 2001 at 01:15:18PM +1100, Howard Lowndes wrote: Can someone remind me what the fix is for the following sendmail error: 553 some.domain.com. config error: mail loops back to me (MX problem?) http://www.sendmail.org/faq/section4.html#4.5 Cheers, John -- whois [EMAIL PROTECTED] -- SLUG - Sydney Linux User Group Mailing List - http://slug.org.au/ More Info: http://slug.org.au/lists/listinfo/slug
Re: [SLUG] MX problem with sendmail
Can someone remind me what the fix is for the following sendmail error: 553 some.domain.com. config error: mail loops back to me (MX problem?) I know it is in the bat book somewhere, but I just cannot find it. google search: "mail loops back to me" site:sendmail.org http://www.sendmail.org/faq/section4.html#4.5 I'm getting these error messages: 553 MX list for domain.net points back to relay.domain.net 554 [EMAIL PROTECTED]... Local configuration error How can I solve this problem? You have asked mail to a domain (e.g., domain.net) to be forwarded to a specific host (in this case, relay.domain.net) by using an MX record, but the relay machine doesn't recognize itself as domain.net. Add domain.net to /etc/mail/local-host-names [known as /etc/sendmail.cw prior to version 8.10] (if you are using FEATURE(`use_cw_file')) or add "Cw domain.net" to your configuration file. There are a couple of additional cases where you don't actually want local delivery, and thus adding domain.net to class w is not the right fix: 1) When relay.domain.net should just be acting as a forwarder, e.g. a firewall/gateway box. The proper fix could be to set up a mailertable entry for domain.net. 2) When relay.domain.net is a secondary (etc.) MX, and the MX mistakenly points to a CNAME or other "non-canonical" name [this gives "config error: mail loops back to me (MX problem?)"]. The proper fix is to point the MX at the actual name, a "work-around" to add the MX target to class w. hth marty -- SLUG - Sydney Linux User Group Mailing List - http://slug.org.au/ More Info: http://slug.org.au/lists/listinfo/slug
Re: [SLUG] MX problem with sendmail
Tks for the reponses. It was in /etc/sendmail.cw and has now moves to /etc/mail/local-host-name. Quoting Howard Lowndes [EMAIL PROTECTED]: Can someone remind me what the fix is for the following sendmail error: 553 some.domain.com. config error: mail loops back to me (MX problem?) I know it is in the bat book somewhere, but I just cannot find it. Howard. LANNet Computing Associates http://lannetlinux.com "...well, it worked before _you_ touched it!" -- SLUG - Sydney Linux User Group Mailing List - http://slug.org.au/ More Info: http://slug.org.au/lists/listinfo/slug Howard. LANNet Computing Associates http://lannetlinux.com "...well, it worked before _you_ touched it!" -- SLUG - Sydney Linux User Group Mailing List - http://slug.org.au/ More Info: http://slug.org.au/lists/listinfo/slug
