Prev-20 Home Next-20 2 msg SQL query as alias 3 msg Mailfrom restriction and SASL clients 4 msg How to inform outside users that domain soon wi... 31 msg ASSP and NOOP 9 msg Double restrictions for SMTP Authen question ? 5 msg Resend 'virus' mails 3 msg message_size_limit exceptions 53 msg about greylist.pl and alternatives 7 msg failing to send a large mail 1 msg Re: Another weird cert question 2 msg Restrict sending to one address from one IP? 6 msg Forcing PIX workarounds? 4 msg header checks are not working 9 msg recipient_delimiter 3 msg Documenting alias expansion in mails 5 msg Domain Change Notification 4 msg How to do a defer_if_permit with a SMTP code 451? 4 msg virtual: mbox fine, maildir generates 'fatal: g... 5 msg Multiple relays and rate control with anvil 550 \ Marian Boboc (28 May 2007) . \ mouss (28 May 2007) . . \ Marian Boboc (28 May 2007) . . . \ mouss (28 May 2007) . . . . \ Marian Boboc (28 May 2007) . . . . . \ Sheldon T. Hall (28 May 2007) . . . . . \ Sandy Drobic (28 May 2007) . . . . . \ mouss (28 May 2007) . . . . . . \ Marian Boboc (29 May 2007) . . . . . . . \ mouss (29 May 2007) . . . . . . \ Steven F Siirila (29 May 2007) . . . . . . . \ mouss (29 May 2007) . . . . . . . . \ Duane Hill (29 May 2007) . . . . . . . . . \ mouss (29 May 2007) . . . . . . . . . . \ Duane Hill (30 May 2007) . . . . . . . . . . . \ mouss (30 May 2007) . . . . . . . . . . . . \ mouss (30 May 2007) . . . . . . . . . . . . . \ Duane Hill (30 May 2007) . . . \ Sheldon T. Hall (28 May 2007) Prev-20 Home Next-20

Prev-Msg Prev-Thread Postfix-users May-2007 Next-Thread Next-Msg Subject: Re: 550 Group: Postfix-users From: Duane Hill Date: 30 May 2007 On Wed, 30 May 2007, mouss wrote: > mouss wrote: >> Duane Hill wrote: >>> On Tue, 29 May 2007, mouss wrote: >>> >>>> Duane Hill wrote: >>>>> On Tue, 29 May 2007, mouss wrote: >>>>> >>>>>> - if it contains junk characters, then it is invalid both in terms of >>>>>> the RFC and in terms of common use. >>>>>> - you can also reject negative numbers: /^-\d+$/. These are invalid and >>>>>> were never reported in legitimate mail. seems like abroken ratware. >>>>>> - you can also reject numeric helos: /^\d+$/. They are invalid, and >>>>>> there doesn't seem to be a lot of legitimate broken sites using these. >>>>> >>>>> Doesn't reject_invalid_helo_hostname take care of these invalid helo's? >>>>> In testing, I can't helo as a negative or positive number with the >>>>> option. I'm not sure as I can't find the detail of what an >>>>> invalid_helo_hostname entails. >>>> >>>> you may have a reject_non_fqdn_hostname in your config. rejecting "123" >>>> because it is non fqdn or because it is a numeric helo are different >>>> decisions. some people cannot reject non fqnd helo's, but they can still >>>> reject numeric ones. >>> >>> I understand that. However, I mentioned reject_invalid_helo_hostname. >>> >>> >> >> >> reject_invalid_hostname will reject a helo if it not a valid hostname and >> not a valid literal IP (IPv4 or IPv6). for "safety|compatibility", postfix >> will accept a naked IP. >> >> Here, a valid hostname is formed with alphanumeric, dots and hyphens. the >> hostname and all its labels (the strings separated by dots) must start with >> an alphanumeric. no empty label is allowed (i.e. adjacent dots are not >> allowed). It must not be all numeric ('1234'). the hostname is limited to >> 255 chars and its labels are limited to 63 chars. >> >> See RFC 1035 for more infos. >> > > I forgot to mention that postfix will accept underscores instead of dashes, > for compatibility reasons. All makes sense now. Thanks. Prev-Msg Prev-Thread Postfix-users May-2007 Next-Thread Next-Msg

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